A blog about teaching and learning in a maths classroom.

@mathslinks — Added to MathsLinks: The Secret of Floppy Paper via @numberphile 22 Sep ago

Bingo: Fractions, decimals and percentages

Tuesday, 09 February 2016 | 0 Comments

I've added an additional game under the Fractions category on MathsStarters Bingo:

Converting fractions, decimals and percentages

This game focusses on the conversion between the common fractions and their equivalents decimals and percentages. The game is limited to fractions with a denominator of 2, 3, 4, 5, 8 and 10.

Screenshot of MathsStarters Bingo

If you're not sure how to use this Bingo game, have a look at this earlier post.

Christmas Tree line design

Tuesday, 15 December 2015 | 0 Comments

Christmas Tree Line Design preview


There are some other line designs here.

Animated perimeter and area

Sunday, 13 September 2015 | 0 Comments

For a recent session with teachers about whole school numeracy, I created a couple of animations demonstrating:


Perimeter - animated demonstration

Also as a video, see MathsLinks.


Area - animated demonstration

Also as a video, see MathsLinks.

Area of a rectangle

Area of a rectangle - animated demonstration

Also as a video, see MathsLinks.

Excel for Mathematics General

Sunday, 30 August 2015 | 0 Comments

The Mathematics General (Stage 6, Years 11 and 12) syllabus in NSW includes numerous content points, considerations and suggest applications involving spreadsheets. But, I suspect, many teachers are not using spreadsheets in their lessons mainly because you get through the course without using them. Yet using a spreadsheet to complete some of the mathematical heavy lifting, can allow for the use of real-life data and the investigation of scenarios.

Instructions found in textbooks for using Excel in the course, are fairly prescriptive, taking away the opportunity for the students to work it out themselves.

I am putting together a web-site that demonstrates how to use Excel to complete common calculations. The idea is 1. teachers not familiar with Excel will have an easy to use reference and 2. students could use the site as a reference to put together their own spreadsheets (rather than being given step-by-step instructions).

The site is

I have a few calculations so far, from FM1, FM2 (financial mathematics) and DS3 (data). There's a suggestion link. Each calculation can be linked directly for student use (or referenced on an instruction sheet).

Screenshot from Excel for Mathematics General web-site

Share with your students, share with teachers, feedback welcome.

ps, it will take me a long time to cover the entire course. If you're interested in helping and know how to screen capture, get in touch.

Odometer, the Universe and trains

Friday, 28 August 2015 | 0 Comments

Today in class, Year 7, I linked to decimals:

  • the odometer in my car... rounding 19.999 to 2 decimals places is like 19999 on the odometer kicking over to 20000
  • π...
    and the universe
  • trains terminating at the end of the line
  • Luna Park, because trains terminate behind Luna Park
  • and of course, Arnie, the Terminator.

Continue to all entries from August 2015

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Simon Job — eleventh year of teaching maths in a public high school in Western Sydney, Australia.
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