MathsClass This Week #2
Nothing to do with MathsClass, this week saw the addition of Emma to our family.
Four maths teachers kindly shared their work on MathsFaculty for others to use.
MathsClass This Week* #1
Recently my online focus has shifted to my network of sites. This network is about making the essentials for maths teaching easier to find and more accessible.
MathsKit is a page of all those everyday resources.
MathsLinks now has over 500 online activites for maths, all categorised.
My new site, MathsFaculty is for maths teachers to share. I suspect that everyday, teachers waste time searching for, and if they don’t find, creating resources. Let’s fix that by sharing.
Each week, I’m going to use this blog to summarise what has been added across these sites.
* “This Week” is more like “recently” for this first review.
Code Breaking
I recently received an email from the AAMT:
National Mathematics Day is Friday 18 May and looks at codes and code-breaking — to celebrate the centenary of the birth of Alan Turing.
The Biggest Loser 2012
Each year I use the TV Show, The Biggest Loser, as an application of percentages – here is a worksheet for 2012 setting out the contestant data that your students can use to perform some calculations.
I’m completing this activity earlier than normal this year, so the data is from earlier in the competition.
Locker Problem
I recently used the “Locker Problem” in a Year 7 Maths Enrichment class (mixed ability). Here are some resources I used:
Quick Quiz - MathsStarters
I’ve updated the Quick Quiz app on MathsStarters.
Lesson Prep
Where do you go for maths lessons and good lesson ideas?
Here’s the start of my list, I’m not particularly recommending these sites, just listing them as places to look for ideas.

Understanding the Battle?
2011 (my 6th year of teaching) was a year of befuddlement1.
Lift Buttons
Whilst often used as a textbook example, I had never seen negative numbers used in a lift before.
MathsLinks Updates
I recently spent some time improving MathsLinks and adding some new features.
Superman Number Plane Logo
A number plane drawing worksheet for making the Superman logo. Included in the file (see below) is a page with a suitable coordinate grid.
Frequency Distribution Table
On MathsStarters, I have added a Frequency Distribution Table tool. The tool lets you have 3 to 10 scores, you tally as you go and the frequency and total are calculated.
You could use this on a projector/IWB (the buttons for incrementing the tally are sized for an IWB). Or, students could use this to record data on their own laptop as they collect it – paperless!
Smartie Statistics - Follow-up
Smartie colours are not evenly distributed across the two bags of 11 fun size boxes I used with my class:
Car Racing
Playing with the kids' toys on the weekend, I came across this car and became interested by the relationship between pulling it back and how far it would travel.
Was it a linear relationship or something else?
Smartie Statistics
Looking around, there are lots of activities for collecting and analysing data using small boxes of Smarties. Here is my version.
Misleading Graph
I’m not trying to present a view, either way, on the carbon tax being debated in Australia. But those against the carbon tax seem to be providing some good fodder for the maths classroom.
Making a self-checking worksheet in Excel
I’ve had interest in how I make self-checking worksheets using Excel.
Index Notation/Laws Hot Potatoes Exercises
Last term I had Year 9 review and learn index notation and the index laws through some self-directed activities.
Pre-service Reflection
For 4 weeks this term, I handed over 3 of my classes (Year 7, 8 and 9 5.3) to a pre-service teacher from UWS. This is an important time for a pre-service teacher when in total they only spend 8 weeks in the classroom before ‘becoming a teacher’.
New Section - GeoGebra
I know there are stacks of GeoGebra files available on the Internet, but I’ve started putting my own here on the site.
Decimal Games
Some games, played with dice, for getting the hang of decimal place value.
Substitution Spider
Having made a Tables Spider this other day, I realised that I made myself a template for creating all sorts of “spiders”.
Maths for SRN
With Stu Hasic’s Student Response Network (SRN) virtual clicker software installed on the 2011 DER laptops that NSW public school students in Year 9 receive this year, I wanted to try it out.
Tables Spider
In 2007, I wrote about a resource, a Number Spider, that I used as a lesson starter.
The Biggest Loser 2011
Each year I use the TV Show, The Biggest Loser, as an application of percentages.
Online picture graphs
A worksheet to accompany the online tool Pictogram Graph (see on MathsLinks).
Mathematician’s Dice
Feeling nerdy? Backing this project on KickStarter will get you a Mathematician’s Dice for just $5 (2 for $10, 4 for $20).
Rather than the boring numbers 1 to 6, these dice have the six most important numbers in mathematics on them — i, 0, 1, φ, e and π!
To a new teacher…
A quote:
Learning math is like learning to play the piano. First menial arithmetic and endless scales, but then Chopin and one’s imagination. @mathematicsprof
Having done both (learn maths and learn the piano) I love this quote. I hated scales when learning the piano. It wasn’t till I had got through my many years of formal piano lessons that I understood how fundamental learning scales was to everything I can do on the piano. As teachers of maths, we face that same kid, trying to convince them that what they are learning now will bring them greater understanding later.
Double Strength Cordial and Ratio
When introducing the topic of ‘ratio’, I use the mixing of cordial as an illustration that most kids get.
The idea of using 1 part of cordial to 4 parts of water makes sense to them – and they get the idea of equivalence when you mix the cordial in a different sized container (I use the examples of using cups to fill a bottle for a picnic, and using buckets to mix a big batch for a party).
Coffee and Teaching Aids
I wrote about my t-shirt box back in 2009. It’s a resource I still use in my classroom. When teaching surface area I have peel off sides for the box which can be placed on the board to show the net.
4 years on
Four years ago today, the first post on this blog was published.
Fun with Coordinate Geometry
Tanya Duffy shared a great coordinate geometry activity on a private forum earlier in December.
What if the largest states of Australia had the biggest populations?
You might have seen this map featured around the place recently:
So I wondered, what if the largest countries had the biggest populations?
Teaching Surface Area
I like teaching surface area, I think it’s an interesting topic. Yet, I find kids struggle with the concept. Not understanding the basics of area and then getting over the prior knowledge of solids meaning volume are two aspects that cause some difficulty.
Inequalities with GeoGebra
This is a great interactive for representing simple inequalities on the number line: Inequalities with GeoGebra.
Back to it…
Returning from a few weeks leave, it wasn’t clear where my Year 8s were up to. I figured they had started looking at grouped data, but I didn’t want to repeat work they might have already seen.
Favourite on MathsLinks
I’ve added a nice little feature to the MathsLinks site – Favourites.
Follow-up to WCYDWT: Spacing Evenly
I showed WCYDWT: Spacing Evenly to some of my classes this week. A couple of reflections…
WCYDWT: Spacing Evenly
A real-life version of this problem presented itself today.

(Source: Elementary Math Mastery, Rhonda Farkota)
Letters and Numbers
Jeff of Webmaths points out a new Australian TV show, Letters and Numbers.
Lessons of stability
Things are tough at my school at the moment, tougher than normal. There are many reasons for that, this is not the post to discuss them though.
Prioritising
After 2 terms as a relieving Head Teacher, moving back to the normal classroom teacher load has been a bit of a shock. Even with faculty matters, I found myself achieving more of the extra things as a Head Teacher.
Building Bridges
For Australian teachers with access to objects from The Le@rning Federation, the resource Bridge Builder is a nice way to deal with geometric patterns and finding the algebraic rule.
Teaching Equations (or not)
It’s that time of year again… that’s right… Year 8 solving equations.
Term 3 2010 SDD
Each year for the Term 3 SDD (Staff Development Day), the four schools (three 7-10 and one 11-12) in the collegiate I work in get together for a combined program.
Are you water wise?
In recent years, Sydney Water has been encouraging households to save water. “With limited and highly variable rainfall in the catchments, the community can no longer rely on water from the dams.” source
MathsLinks Launch
After the recent redesign of MathsKit, the next site I have redesigned, or really launched is MathsLinks.
End of Term 7
The end of term series of posts are some of the most popular on this site.
MathsKit Redesign
For a while, I’ve been developing a new look for this site and working out how to better connect my maths sites.
Time - Self-checking Excel Resource
This is a resource for skills in working with time.
Investigating Scientific Notation
I’ve been trying to increase my use of the laptops with Year 9.
Significant Figures
In the NSW Mathematics Syllabus students are to learn about “rounding numbers to a specified number of significant figures” [NS5.2.1].
Pythagoras Outside
This is a fairly simple activity that allows for something different in the teaching of Pythagoras’ Theorem.
Dan Meyer: Math class needs a makeover
I think this is essential viewing for Mathematics teachers. I’ve been waiting for a meeting with my faculty to show them, which I got to do on Thursday.
Dan Meyer blogs at dy/dan, which you are already reading as a maths teacher… right?
Richer Percentages
How do you make a unit on percentages richer / project-based / engaging / authentic?
What do you call your maths staff? (poll)
Polite names of course!
A 2 question poll about the name used to refer to the mathematics staff at your school.
An idea for Maths Teachers
I suspect most readers of this blog would agree that online networking with other teachers is now the key form of professional development. Yet, we would all know many teachers who are not engaging online in discussions with colleagues.
Term 1 Recap
A different term to say the least. The lack of posts on this site illustrates how busy things were.
The Land of Algerb
Starting Algebra with Year 8, we spend a couple of lessons on various “algebraic techniques”. I’ve been trying to find some activities which provide a little more engagement. I created “The Land of Algerb“ to explain multiplying pronumerals.
Teaching Year 10 with Laptops
In 2009, Year 9 got their DER netbooks and now they are in Year 10. This year’s Year 9 does not have their netbooks yet, and so this gives teachers a little time to get their heads around the inclusion of netbooks into the classroom. This year, I’m teaching a 5.2 pathway Year 10 class (and a Year 9 5.2 class).
Laptop Wraps
For NSW DET teachers, I’m sure you know of TaLe, and hopefully have seen some of the resources for the DER that have been published there. One category of resources has been called Laptop Wraps (they are also available publicly).
My classroom
I really appreciate having my own classroom for many reasons, but one is the ability to place student work (the fun stuff) around the classroom.
Using the web
I just posted on my personal blog about how I use the web, looking at how the various technologies (RSS) and tools (Google Reader, Delicious, Twitter) fit together.
Make a roll book
Teacher’s all have their own way of keeping track of student attendance, and other aspects that are recorded in class. Here’s mine, it might give you some ideas.
Looking back on 2009
Usually I would reflect here on the year past. To be completely honest, I couldn’t be bothered reflecting on 2009. If I were to write down my thoughts, it would pretty much read like the post from February of 2009: Looking to 2009. It was a tiring and quite often frustrating year.
Getting your network in order
Reading blogs and networking on Twitter seem an obvious part of being a teacher. Yet when I take in to school a shiny new resource that I’ve received through one of these means, I usually get asked “where did you find this?”. The person behind the question is often thinking that I spend copious hours sitting at home in front of a computer “web surfing” or trying endless combinations of search terms in Google.
Chocolate Bar Graphs
Some chocolate discussion starters for looking at bar graphs: a series of chocolate bar graphs.
Guessing to learn
This week, my Year 8s have been looking at inequality signs, graphing inequalities and solving simple (one-step) inequalities. Today, after solving inequalities, we played a simple game. A simple, obvious game, that really doesn’t warrant a blog post.
2009 Edublog Awards Nominations
Here are my nominations for the 2009 Edublog Awards.
End of term activities 6
The end of term/year often brings lots of disruptions. So, as much as I like to keep teaching till the end, some days require something a little different. I like hands-on quasi-mathematical activities that allow every student to engage with and complete. And on Thursday, just before having one of those disrupted days, I found this…
Pie Graphs on Netbooks
Despite every Year 9 student having a laptop for a few weeks, the topics we’ve been covering haven’t lent themselves to full laptop lessons. To end the term, though, we’re reviewing graphs.
Drawing in Excel
A lesson for Year 9 students with DER laptops, or anyone really.
Some graphs are just wrong
Here’s a great example of a graph that is just wrong, the data may be correct, but it has obviously been represented the wrong way. Watch the video…
Evidence of doing anything
I think that each student using a netbook/laptop in your class presents some slightly different issues in Maths.
Heat Sinks - Surface Area
I’m about to get into Surface Area with Year 8. Of course, there will be chocolate. But, since I last looked at Surface Area with Year 9 I’ve been thinking about Heat Sinks.
Updates/feed change
I have turned off the automatic inclusion of my Delicious “maths” links in the update feed/email for this site.
Introducing Probability
This is an amusing video to introduce probability… some of my Year 8s found it hilarious.
Making a matching activity
As I mentioned, the DER roll-out hit my classroom as we were in the midst of Algebra. Due to a tight program and exams shortly, I had to stick with a couple of topics which don’t really allow for “play” on the laptops as much as I would have liked.
A lot of the Algebra taught at the Stage 4 level is technique, and so matching activities work particularly well to practise and review skills.
Here’s a review of some of the ways I’ve found to make matching activities for use on the laptops.
Resize to Netbook Size
Not really maths related, but handy if you’re looking at a web-site that will be used on a Netbook.
Report writing season
Report writing season… ponder kid, ponder kid, write a paragraph of positive when you’d rather be honest, edit, colleague cooperatively corrects copied carelessness, supervisor strikethroughs signify subtle substitutions, remove commas, add c,o,m,m,a,s, throw in a hyp-hen for good measure, correct, copy to system, shorten, review, save, have a life… wait for reports to be published… find report in bin.
Handling the Inappropriate
Week 1 is over, and I need to reflect on what happen when I introduced laptops into my classroom.
Computer Aided Homework
A Digital Education Revolution (DER) laptop in the hands of all Year 9 students changes everything… or does it?
MathsKit
I recently created a site called MathsKit. Whilst I added some links to it on this site, I haven’t actually mentioned it yet.
DERing with Year 9
![]()
Year 9 got their DER netbooks just before the end of Term 3. The first week of Term 4 will be the first time they have them in class, so I wanted to start term with some introductory activities, with a Maths focus.
This post is a work in progress, check back for updates.
20 Oct 2009: Go to update
Words for operations
I’ve been meaning to try ClassTools.net for a while. With ClassTools.net you can make interactive Flash games, from a range of templates, then save and share them.
End of term activities 5 - Patterns
Tomorrow is the last day of term… hurray! Here’s another end of term activity for use with your maths class.
Link: Western Bulldogs Number Plane Logo
If you’re looking for more number plane drawings, but lean towards AFL, then check out Jeff Trevaskis’ Western Bulldogs Number Plane Logo from his blog, Webmaths. Nice one Jeff!
Making a dice
In my IST class, we’re studying Modeling and Simulation, and started to make a model of a dice using Excel.
Thinking about it, the technique involved in making this would also be of interest to Maths teachers.
NSWDER Tutorials
Brad Bennett, a student at a NSW DET Public High School, has made a site called DERNSW Tutorials – Tutorials for students and teachers using NSWDER laptops.
Brisbane Broncos Number Plane Logo
Last year, I posted the Melbourne Storm Number Plane Logo – and today, exactly one year later, purely by coincidence, I’ve made a Brisbane Broncos Number Place activity.
Teaching equations
Year 8 were recently assessed on solving equations and I was a little perplexed by the results.
League Tables
There has been a debate in Australia about the creation of league tables comparing schools. I think the government(s) intention is to just make more data publicly available and easily accessible. No matter what the data says, or the impact of producing the data, the one thing the government(s) have not explained, let alone committed to, is what they will do if the data shows an under performing school (whatever that means).
Classroom Icons
Having found this tip on elearnr.org Doug Belshaw’s blog about using PowerPoint:
Find graphics that represent things you do frequently in lessons (perhaps from clipart) and always use these when doing a similar activity. For example, a pen writing for when it’s time to start work or two people talking for discussion/group work. These help reinforce good habits and aid classroom management.
I went looking for some nice graphics to use.
Perimeter of curved shapes
This week, Year 9 were looking at finding the perimeter of shapes that include curves (parts of a circle).
World’s Fastest Clapper
Here’s a quirky little activity that uses the DER laptops.
Student Expectations with Laptops
As a PBL school, we have lots of “Student Expectations” at our school for nearly all aspects of an ordinary day (entering the classroom, in the playground, walking through a corridor – we have narrow corridors, formal assembly). In a couple of weeks, there will be another aspect of the “ordinary day” – laptops. So, I’ve drafted some student expectations for the technology committee at my school to discuss.
Asking Yr 9 about laptops
As part of the last lesson with my Year 9 class in Term 2, I asked them to write me an email expressing their thoughts about getting their own laptop in Term 3.
Using GeoGebra
This article is not a “how-to” but rather some thinking about using GeoGebra (a discussion starter maybe).
Curriculum Support for DER
For NSW DET teachers, the Curriculum Support web-site has been updated with resources for the DER, i.e. the laptops being rolled out to Year 9 students.
10 Things Teachers Should Know Before 1:1
A quick read… some thoughts on 1:1 Computing from the “Free Technology for Teachers” blog: 10 Things Teachers Should Know Before 1:1.
Updated: Another new article: Ready for 1:1? Check this list before you answer from Darcy Moore a DP at Dapto H.S.
Time to learn
Teacher’s throughout NSW DET schools are starting to receive their DER netbooks.
Google SketchUp
Google Sketchup is one of the applications bundled on the DER netbooks being rolled out into NSW Public High Schools in Term 3. But as it’s free, you can download it now for Windows XP/Vista & Mac OS X.
Teach the teachers
From The Australian, Technology lesson one: teach the teachers comes this:
… “This isn’t just about teaching teachers to use the technology,” Professor Stoney said.
“It’s about teaching them to use it for learning. How do students learn with technology?
Laptop rollout
I recently contributed some comments to the executive at my school about the DET roll-out expected to be happening soon. A slightly editted version is below. I’m really not sure where the executive are at with this roll-out, I haven’t heard much except from the computer coordinator – it’s a shame, or more accurately, it makes me nervous, because there is the potential for a lot of problems to arise from this roll-out if we’re not prepared. I’m republishing my comments because they might help you in engaging with your school about planning and preparation.
Dam Water
Still on capacity. With Australia having been in a drought since 2003 another interesting way to engage with the topic of capacity is to look at the water storage levels.
IWB in High School Maths - What I’ve done
My previous post on having an IWB in my classroom was written about three weeks after it’s installation. Tomorrow, we’ve got an IWB consultant/trainer/type-person-thingy coming to school, and I was asked to share what I’ve been doing with the IWB. So I wrote a quick list.
A response to the DER
The DER, as it is unfortunately named, is about to hit NSW schools.
What’s in the fridge?
What else could you do with capacity? As I was getting a glass of juice to have with my breakfast, I was thinking that I could use this image as a quick question at the start of a lesson.
Digital Media - Capacity
With laptops rolling out shortly and projectors appearing in some classrooms, we should be thinking about collecting digital media for use as stimulus or investigation material. So, the other day when filling up my young daughter’s bottles, I took some pictures.
Maths Links
For a while I’ve been collecting and saving to a web-site maths objects to use with my classes. By objects I mean single activities, rather than a web-site of maths activities. I’ve been trying to take some of the many things I find and save to delicious and put a purpose to them – deciding that it’s something I could use with one of my classes.
Dice
I wanted to play a multiplication bingo type game with a class the other day, so I grabbed two 10 sided dice (apparently you don’t need to call a single dice a “die” anymore) out of the cupboard. Then I thought… hey I have a projector and a laptop.
Maths L4L Wiki
If you missed it in the comments to an earlier post. There are two new wikis you might want to keep an eye on as a NSW DET teacher (or any Maths teacher really).
L4L Software Specs
The NSW DET will shortly equip Year 9 students with a Lenovo S10e netbook as part of a program called “Laptops for Learning” (L4L). To me, if we are going to do this – then it’s time to include some good software on these machines and help out schools who cannot afford some of the more exciting applications.
Universcale
Depending on what they’ve previously experienced, students struggle with the immense scale of the universe (mind you, so do I).
Isometric Drawing
When starting “Volume” with Year 8, we start by looking at cubic units and isometric drawings. This year, with an interactive whiteboard (although, these resources are also suited for use with just a projector or in a computer lab), I was able to use a couple of excellent online resources.
Drawing Mathematically
Are you drawing mathematical diagrams in Microsoft Word? You might even be achieving success doing this; once you’ve worked out how to wrangle Microsoft apps to do what you want, they can be powerful. But, for drawing mathematical diagrams there are better options.
FX Draw by Efofex is the application for drawing static diagrams for inclusion in worksheets, assessment tasks etc. The one down-side of this software is that there is no Mac version. (The rest of the Efofex MathPack is worth the money as well)
The Perfect Tree
I was preparing for part of a presentation to the staff at my school tomorrow, highlighting the importance of numeracy being included in all subject areas.
Preparing for Laptops 4 Learning
Term 3 will see the roll-out of netbooks to Year 9 at my school (some photos of the Lenovo S10e).
I’ve been thinking about how to prepare for this roll-out in my own teaching.
Transformations
Here’s a PowerPoint file I made to quickly review transformations before getting into congruency.
Confusing with words
I wonder how often maths teachers make confusing statements like this in class:
Single aged pensioners may lose one-third of an expected $30-a-week increase in the May 12 budget. [emphasis mine, front page of smh.com.au on 26th April 2009]
What they actually mean is that the expected increase will be $20.
Chocolate and Maths
Eating chocolate could improve the brain’s ability to do maths.
[full story: telegraph.co.uk]
AKA, justifying the use of Freddos in the maths classroom.
Parts of a Circle
I need to learn to use GeoGebra because it looks like a fantastic app, it’s free and shortly our students will have their own netbooks, itching to use them. I find the best way to learn new software is to do something with it that you need.
Interactive Whiteboard in High School Maths
This may be the first of several posts as I review the effectiveness of having an Interactive Whiteboard in my classroom.
The Biggest Loser 2009
The Biggest Loser, the Australian version, is again on television. This year, Year 9 are looking at Percentages at the same time.
End of term activities 4 - The Game of Hex
The last week of term begins next week…
A digital education revolution?
I have watched with interest the Digital Education Revolution proposed by the Australia Government. Issues of cost seem to have been resolved and I’ve resigned myself to the fact that the NSW DET is pushing a one laptop fits all model (although I think it’s flawed). I’ve read the tender for the “DET Learning Device” and have even dissected it with my computing class. But today, 1st April – fitting really – a significant step to realisation has been taken with the announcement of the hardware and software to be supplied.
What’s wrong with this protractor?
It’s been a little quiet around here – mainly due to the busy time of term and sickness.
Anyway, I recently got a packet of protractors for my class. Every one of them has a problem, maybe you can spot it.
Million, billion, trillion
I used to think that I knew what 1 billion was, i.e. 1 000 000 000 000. Then a couple of years ago, I looked on Wikipedia and found there were two defintions: Long and short scales.
Bearing and airports
As part of a unit on Trigonometry, we review compass and true bearings before working with bearings in Trigonometry problems.
To start this review lesson, we looked at some images from Google Earth.
A story for Trigonometry
A really easy way to create engagement when introducing a new topic is to explain some of it’s applications outside of the maths classroom. For Trigonometry, I use an explanation of how I used trigonometry in a previous career to find the height of trees.
The Big Picture
If you don’t have The Big Picture from boston.com in your RSS feeds, it’s time to add it. Alan Taylor regularly collects some fascinating photos together. This edition, At work.
Maths with Adam Spencer
Having even a basic but strong numeracy to you is something that really can give you a lot of advantage in life.
The NSW DET have published their first e-zine for Parents which includes an interview with Adam Spencer (Breakfast radio presenter on ABC 702 and Mathematician) by James O’Loughlin. It’s a helpful discussion about Mathematics at school and how parents might help their kids.
Siftables, the toy blocks that think
This blog is about Maths teaching, however this year (as noted in an earlier post), I’m also teaching a computing subject: Information and Software Technology. Occassionally, I’ll post something that is more related to a computing subject than Maths, but hopefully everyone reading this blog will still find it interesting.
Sector Graphs
In my fourth year of teaching, I’m finally happy with how teaching sector graphs went.
Free of technical hassles
In a previous post I talked about the Digital Education Revolution – the roll-out of student laptops. There will probably be quite a few posts on that topic this year.
T-shirt box
Keep an eye out when shopping, a great maths teaching aid could be staring you in the face.
Hot
It’s a new school year. This post, therefore, should be full of optimism and goals. But, please indulge me in a short whine.
It’s hot, ridiculously hot.
Looking to 2009
2009 will be my fourth year of teaching. There are a few things happening this year that I want to note now, so I can reflect on their outcomes at the end of the year.
You Can Do Maths
The Australian Association of Mathematics Teachers (AAMT) recently created a web-site called “You Can Do Maths”. From the site:
The youcandomaths campaign encourages all young people and their families to appreciate the important role mathematics plays in many careers and everyday life.
See, maths is important
An embarrassing, and slightly funny, example of why Mathematics is important (in this case, being able to read a calendar).
Annual Report 2008
This post is my entry to Dan Meyer’s contest My Annual Report II.
No projector for you
Going into school today, I was looking forward to seeing a new digital projector and Interactive Whiteboard installed in my classroom.
Getting started
There are a couple of previously published resources on this site that might help you out as you prepare for the new school year.
Borrowing Money in Plain English
Another good video from The Common Craft Show. This one is on Borrowing Money.
Theatrical Aspect Ratio
Recently Dan Meyer posted his thoughts on the ideal maths textbook, which would actually be a digital archive of very interesting mathematical media
. This is a great idea, and whilst I don’t have a projector in my classroom yet (although fingers-crossed), it would be something that I would buy/subscribe to. Anyway, there was a challenge in this for me: being mindful of the media I consume and the world around me to collect digital bits and pieces that might help explain a mathematical concept (I commented on Dan’s blog that I missed the opportunity to take a picture of 3m³ of dirt I had delivered). The second, to my mind harder, challenge is to take that item and make a meaningful and engaging connection with a concept being taught in class.
Temperature Conversion Graph
As I was putting together a lesson on using conversion graphs, I couldn’t find a nice temperature conversion graph - so I created one.
Saving Money in Plain English
This video from The Common Craft Show is an excellent “introduction to the magic of compound interest and how it helps money grow over time”. Keep an eye out for more videos in their financial basics series.
2008 Review
In my post Thinking about 2008 I noted four things to improve my teaching in 2008, here I review how I did.
Maths symbols in Word (Mac)
Creating a maths worksheet in Microsoft Word without using the proper symbols does not present well – I’m sure you’ve seen 2 * 2 = 4 or 2 x 2 = 4 rather than 2 × 2 = 4. My previous post, Maths symbols in Word is one of the most popular on this site. In that post, I gave shortcuts for inserting mathematical symbols into Word - the post was specific to the Windows version of Word. As I’ve been a Mac user for a year, it’s time to make a similar post for Mac users.
Wild About Math!
I’m currently sorting through the many teaching blogs I subscribe to, trying to cull the list. The thing about Maths related blogs that tends to keep them in the list is that Maths teachers generally write more practical posts.
The Story of 1
Here’s a video about the history of number, in particular the numbers 0 and 1. Our Year 7 program begins the year looking at ancient number systems, so this video will fit in nicely.
MathsClass Site Maintenance
Today I finished moving MathsClass. You’ll hopefully notice no difference, but it changes some things for me and allows me to expand this site a little in the next couple of weeks. As a result, if you subscribe to this site via the feed or by email, you may have seen old entries reposted as new - sorry about that. They’re obviously not new, but in the moving process were “updated”, hence they’ve reappeared in the feed and email updates.
Merry Christmas, and if you’re looking for something to do this break, check out the properties of your favourite numbers on the Number Dictionary (unfortunate URL, but a good site).
End of term activities 3
The end of year activity of choice this year, will be making Zombies!
MathsClass Survey
MathClass has sort of become a blog of resources, rather than a more general conversation about teaching. I’m not sure whether that’s necessarily a bad thing, so I’d like to know what my readers think.
Equal areas in a circle
Trying to motivate Year 10 after the School Certificate Exams are completed is tough. I like to use geometric design activities. Whilst they seem like “fun”, or at least non-taxing on the brain – they get the students following a procedure, using geometric instruments and can be lead to a good discussion about the Mathematics of design.
Melbourne Storm Number Plane Logo
Fraction Shading
Understanding the concept of a fraction by shading in a part of a shape is a fairly standard introductory activity. When I did a search on Flickr for fractions, I found this set of fraction shading diagrams*. What I liked about these diagrams is that you are required to represent two fractions on one diagram.
Perpendicular lines activity
This simple design activity could be used as something extra whilst Year 7 are using geometric instruments and learning about perpendicular lines. Or, as a stand-alone activity.
Angle Wheel
Building an Angle Wheel is a great way to consolidate an introduction to angles for Year 7.
Searching Pi
The Search π website does just that, allows you to search the first 3.2 billiion digits of pi for a string of numbers.
Estimating length
When looking at measurement, year 7 measure “body units” and use them to measure things in the classroom, as an example of estimating. Then, when we move onto perimeter, we come back to one body unit, the pace.
Profit, a story
Starting a lesson on profit and loss with this story, quickly introduces some key concepts and we have a bit of fun.
Big Number Line
For many students, working with directed numbers (positive & negative numbers) requires the visual aid of using a number line.
The Biggest Loser
‘The Biggest Loser’, the Australian version, is currently on Channel 10. Conveniently, it appears on TV the same time we’re looking at Percentages with Year 8 providing a great connection between popular culture and maths.
Frustrations
There’s a lot said in university lectures, teacher inservices and blogs about how we should be teaching.
Two fonts - tally and calculator
Two very handy fonts that will help make worksheets and other computer created resources look great.
Keeping organised
I’ve found that teaching is one of those jobs where you end up making “to-do” lists. Years ago, I was determined to do away with paper-based to-do lists chasing me around. I started using Backpack described as an “information organiser” — Gather your ideas, to-dos, notes, photos & files online.
Google Forms
Google have added a nice little feature to their online spreadsheet – the ability to collect information via an online form.
They’re quicker than me
Each year, we review the four basic operations with Year 7. We don’t re-teach, because they would have already developed a method in primary school. So, for each operation, we mind map different methods for solving a couple of different problems.
Tell me about maths…
In the first lesson with each of my classes, I gave them a chance to let me know how they felt about maths. I hope this conveyed to my students that I am interested in what they like about maths and what they find difficult, it also gives me a basis for creating activities and future reflection to see what we’ve achieved.
End of term activities 2
It’s been two terms since my last post on this blog, End of term activities. So, as I return to this blog at the end of the year, here are some more “last day” type activities.

End of term activities
For the last day of term, lessons may not follow a normal program, however they can still be engaging and mathematics related.
Lesson Starters
Lesson Starters is a page full of activities to start a mathematics lesson.
One I’ve used is Number Spiders, there’s even an overhead (PDF) ready to print. Keep it in your classroom for those days when you know the start of the lesson is going to be disrupted.
Number Bowling
Another game, this time for the most basic “technology” in the maths classroom - the calculator.
Quiet vs quiet
I had a chance the other day, rare, to reflect on what was happening in my classroom during class time. I noted one of the inconsistencies in my language.
Pig
I’m trying to build up a collection of maths games for lesson fillers, reward and skills practise.
Heart Rate Activity
An outdoors activity is always a welcome change to a maths lesson. To introduce rates, I take the class outdoors to measure their heart rate.
EAA Mathematics Resources
Here’s a nice page of resources for Mathematics teachers, published via the EAA (Educational Assessment Australia, UNSW).
Generating random questions in Excel - Basic operations
In this second post about using Excel to generate random questions, the first showed how to make a question about money, I show the simple formulae used to generate questions using the 4 basic operations.
Prepared
University teacher training can only teach you so much, there are many aspects of being a teacher that university does not prepare you for.
Checking books
At my school, one of our key values is “organisation”. Organisation covers many things in our school, like lining up, walking on the left, and bringing the necessary equipment each day. In the classroom, organisation is encouraged through regular book checks.
Generating random questions in Excel - Money
Excel, part of Microsoft Office, is great for working with numbers. For a maths class, Excel can be used for standard applications like working with tables of data and creating graphs. Other teaching and learning applications that I’ve seen include creating self-marking computer based worksheets, interactive worksheets using sliders and even randomly generating questions for paper worksheets.
Lined paper
The new school year in Australia starts in just over a day. Here’s a “new school year helpful printable download”.
MathsClass Search Engine
There are two search boxes in the right-hand column of this site. The first just searches this site. The second is much more interesting.
Tech in the classroom, a struggle
One of the difficulties I found in my first year, was using technology in the classroom for the teaching and learning of mathematics.
Report: “Their Space: Education for a digital generation”
In the 16th January 2007 episode of the BBC’s program Digital Planet, Gareth Mitchell talks to the authors of a report about children and technology. The report is titled “Their Space: Education for a digital generation”. It’s a free PDF download. I haven’t read it yet… maybe some reflections in a future post.
Maths symbols in Word
Many teachers use Microsoft Word to create worksheets. It’s not designed for the job, there are better options but Word is the easiest to learn and has the greatest compatibility - making it easy to share documents. One of the problems I see is that many people don’t know how to insert symbols into their document. For example, x (the letter) is not a good substitue for × (the multiplication symbol). This post shows you how to insert symbols like ×, ÷ and π quickly, on most computers (a Windows PC running Microsoft office).





