# MathsClass

A blog about teaching and learning in a maths classroom.

## Archives → Number

### Dates as Operations 2018

Saturday, 03 February 2018 ·

In 2017 I published a post Dates as operations 2017 - a collaborative effort to write a mathematical statement from the digits of the date.

Here is the 2018 version. To quickly access in class type gomaths.net/dates into your address bar.

Updated for 2019: gomaths.net/dates

Updated for 2021: gomaths.net/dates

Updated for 2022: gomaths.net/dates

Updated for 2023: gomaths.net/dates

### Dates as Operations 2017

Wednesday, 28 December 2016 ·

Like most teachers I write the date at the top of the whiteboard each day. As an extra point of interest, in 2016 I endeavoured to write a number sentence using the digits of the date, in order, underneath the date.

### Division problems

Sunday, 08 February 2015 ·

My Year 7s do not have a good grounding in division.

### Self-checking Christmas Worksheet

Thursday, 04 December 2014 ·

Here's a self-checking, simple questions, as you get the answers correct the tree lights up.

Nothing fancy. Just needed something for a computer lab tomorrow.

### Number of the day

Monday, 27 January 2014 · (2) Comments

Here's a starter activity I have built on MathsStarters: Number of the day.

### Number Sense Posters

Sunday, 17 March 2013 ·

For a few years, I’ve noticed that kids not only don’t know/struggle with their times tables, but also general ‘number sense’.

### Kitchen Scale

Sunday, 27 January 2013 ·

I put up my first image on Dan Meyer’s 101 Questions yesterday, Kitchen Scale. Wander over there.

What’s the first question that comes to your mind?

### Times Tables Grid Wall Poster (Made4Math)

Friday, 21 September 2012 ·

It’s the last day of term here, so teachers might want to spend some time today fixing up their room. So, I brought my Made4Math Monday forward.

I needed some times table posters for my classroom, but the posters you can buy tend to be for younger students and I haven’t seen a grid version (rather than each table listed separately).

### Lift Buttons

Wednesday, 04 January 2012 ·

Whilst often used as a textbook example, I had never seen negative numbers used in a lift before.

### Tables Spider

Monday, 18 April 2011 ·

In 2007, I wrote about a resource, a Number Spider, that I used as a lesson starter.

### For the new year

Sunday, 30 January 2011 ·

Here are some resources for the new year…

### What if the largest states of Australia had the biggest populations?

Saturday, 04 December 2010 ·

You might have seen this map featured around the place recently:

So I wondered, what if the largest countries had the biggest populations?

### Follow-up to WCYDWT: Spacing Evenly

Saturday, 18 September 2010 ·

I showed WCYDWT: Spacing Evenly to some of my classes this week. A couple of reflections…

### WCYDWT: Spacing Evenly

Sunday, 12 September 2010 ·

A real-life version of this problem presented itself today.

(Source: Elementary Math Mastery, Rhonda Farkota)

### Letters and Numbers

Thursday, 09 September 2010 ·

Jeff of Webmaths points out a new Australian TV show, Letters and Numbers.

### Guessing to learn

Wednesday, 09 December 2009 ·

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.

### Words for operations

Monday, 12 October 2009 ·

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.

### Million, billion, trillion

Thursday, 12 March 2009 ·

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.

### The Big Picture

Saturday, 21 February 2009 ·

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.

### The Story of 1

Thursday, 01 January 2009 ·

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.

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Simon Job — eleventh year of teaching maths in a public high school in Western Sydney, Australia.
MathsClass is about teaching and learning in a maths classroom. more→

@simonjob