MathsClass

A blog about teaching and learning in a maths classroom.

@mathslinks — Added to MathsKit: Top Drawer Teachers mathskit.net/#tutorials-les… 14 Apr ago

Number of the day

Monday, 27 January 2014 | 2 Comments

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

This idea is fairly simple, there are many examples of this activity on places like Pinterest.

For my version, each day of the year will show a different number. For each number there are four variations of the questions (A, B, C and D). You could use this activity at the start of the lesson with a class, and repeat with a variation of the quiz later in the lesson.

This is part of my strategy to develop the number sense of one class in particularly this year.

As always, feedback and suggestions are welcome.

Number of the day screenshot


MathsClass This Week 21 December 2013

Saturday, 21 December 2013 | 0 Comments

Happy end of school year (in Australia at least).

This week on MathsLinks

Screenshot of Multiplying Coins Trick

Multiplying Coins Trick 21 Dec 2013

It seems like telepathy but, as Rob shows, its a bit of simple logic combined with easy mental arithmetic, but if your audience doesn't know how it's done, it is an impressive trick.

Screenshot of Series Problem - Shapes

Series Problem - Shapes 21 Dec 2013

Everyone understands a series of numbers or letters, but what is a series of shapes? A series problem involving quadrants in a circle.

Screenshot of Midday Traffic Time Collapsed and Reorganized by Color

Midday Traffic Time Collapsed and Reorganized by Color 21 Dec 2013

The high-tech version of students standing at the front school fence and counting cars by colour. In this new video I took a four minute shot of state highway 163... then removed the time between cars passing and reorganized them according to color. I was curious to see what the city’s car color palette looked like when broken down.

Screenshot of Circle 3

Circle 3 17 Dec 2013 · via Meagan Rodda

The goal of this puzzle is to put three numbers inside each circle so that they add up to 3. To solve the puzzle, click and drag the black numbers to the blank spaces. You cannot move the blue numbers. When the three numbers inside any circle add up to 3, the circle changes colour.

Screenshot of Column strength test

Column strength test 16 Dec 2013

Teaching three-dimensional shapes or geometry? Demonstrate the extraordinary strength of the humble cylinder using ordinary paper and a stack of books. Includes video and teacher notes.


MathsClass This Week 24 November 2013

Sunday, 24 November 2013 | 0 Comments

This week on MathsFaculty

Curve Sketching Interactive Files

Content: GeoGebra, Interactive, IWB · File type: GeoGebra · 21 Nov 2013 · by darren.wright

Investigating Quadratic Functions - Parabolas

Content: Worksheet - Electronic · File type: Excel · 21 Nov 2013

Linear Modelling

Content: Worksheet - Electronic · File type: Excel · 19 Nov 2013


MathsClass This Week 10 November 2013

Sunday, 10 November 2013 | 0 Comments

This week on MathsFaculty

Investigating Averages

Content: Game, IWB, Lesson, Reflection · File type: SMART Notebook · 7 Nov 2013 · by Bevoooo


MathsClass This Week 2 November 2013

Saturday, 02 November 2013 | 0 Comments

This week on MathsLinks

Screenshot of Gambling: Calculating the Risk

Gambling: Calculating the Risk 31 Oct 2013 · via penelope.field

Las Vegas here we come... How often do you win on Scratchies? How about the Pokies? Is Roulette more reliable or Lotto? Play these games while learning about the probability of winning in each of them.

Screenshot of Area of a Rhombus

Area of a Rhombus 28 Oct 2013

A GeoGebra worksheet to derive the area of a rhombus.

Screenshot of Area of a Rhombus (deriving visually)

Area of a Rhombus (deriving visually) 28 Oct 2013

A video showing the visual derivation of two forms of the formula for finding the area of a rhombus.

Screenshot of Area of a Parallelogram

Area of a Parallelogram 28 Oct 2013

This applet will show you how to divide the parallelogram into pieces, arrange them together to form a rectangle, and then use the formula for the area of a rectangle to find the area of the parallelogram.

Screenshot of Area of a parallelogram - derivation

Area of a parallelogram - derivation 28 Oct 2013

This page describes how to derive the formula for the area of a parallelogram. It works by moving a piece of the parallelogram so as to make a rectangle with the same area, which is easier to calculate.

Screenshot of xkcd: Monty Hall

xkcd: Monty Hall 26 Oct 2013

An xkcd comic on the Monty Hall (probability) problem.

Screenshot of Gauging Your Distraction

Gauging Your Distraction 25 Oct 2013 · via Sir Maths Alot

New studies show that drivers overestimate their ability to multitask behind the wheel. This game measures how your reaction time is affected by external distractions. Regardless of your results, experts say, you should not attempt to text when driving.

Screenshot of How fast are your reactions?

How fast are your reactions? 25 Oct 2013 · via Sir Maths Alot

Test your reaction time with this game.


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