**toni**

## Years 6 – 12 Flower of Life

*By toni On 16 July, 2019 · Leave a Comment*

Describe the picture? What do you notice? Talk with your friends about it. What shapes can you see in it?

Describe the different symmetries. Draw the picture yourself. Draw your own designs using this idea. Can you explain how this 2-dimensional picture appears to show a 3-dimensional object?

You could use paperclip […]

## Years 6 – 12 Ishango Bone

*By toni On 9 July, 2019 · Leave a Comment*

The numbers 3, 5, 7, 11, 13, 17 and 19 are prime numbers. Can you make a total of 60 from four of these numbers?

One of three columns of tally marks on The Ishango Bone gives the answer to this question. Found in the Ishango region of the Democratic Republic of […]

## Years 8 – 12 Elephant Dreaming

*By toni On 3 July, 2019 · Leave a Comment*

Copy the picture to draw this spiral. Then create your own elephant. The numbers in the centres of the squares give the radii of the quarter circles that you need to draw.

What do you notice about this sequence of numbers 1, 1, 2, 3, 5, 8, 13, 21 … ? […]

## Years 4 to 12 Table of Tables

*By toni On 3 July, 2019 · Leave a Comment*

What patterns do you notice in this table?

Continue the patterns to fill the empty squares.

Write a list describing all the patterns that you see.

What do you notice about the numbers on squares of the same colour?

Would the patterns […]

## Grades 8 to 12 A Mathematical Lens

*By toni On 2 July, 2019 · Leave a Comment*

STEP 1

1a) Double click on the picture above to start the movie showing how to draw a circle using the paperclip compass.

1b) Draw 2 circles of the same radius with centres A and B so that each circle goes through the centre of the other […]

## Grades 9 to 12 Pyramids in a Cube

*By toni On 29 June, 2019 · Leave a Comment*

To make a model showing how cubes are made up of three square based pyramids, you will need a cardboard box, some string, some colouring pens and a knife or scissors to cut the box.

From one corner of a box cut squares all exactly the same size to form 3 faces of a […]

## Grades 8 to 12 Cuboids and roots

*By toni On 29 June, 2019 · Leave a Comment*

Copy this diagram. To draw a cube first draw a square, then draw another square the same size that looks as if it is behind the first square, then join the vertices with four parallel lines.

Why do the diagonals of a unit cube have lengths √2 and √3?

What are the lengths of the […]

## Apply for an AIMSSEC course.

*By toni On 7 April, 2019 · 4 Comments*

Teaching in under resourced communities presents many challenges. AIMSSEC’s mission is to empower teachers, teacher trainers and subject advisers to combat poverty by bringing new skills, new hopes and new horizons to African schools and raising standards of mathematics. Courses are taught by an international team of mathematics education experts. Residential courses for subject leader […]

## ONE THREE FIVE SEVEN GAME

*By toni On 23 February, 2019 · Leave a Comment*

This is a game for 2 players. You should have 16 objects.

Arrange the objects in 4 rows with 7 on the bottom row, then a row of 5, then 3, then 1 at the top.

Players take turns to choose a row and to remove any number of objects from that row.

[…]

## HOW MANY TRIANGLES PUZZLE

*By toni On 23 February, 2019 · Leave a Comment*

How many triangles can you find? Look carefully, there may be more than you think!

Click here to download a large copy of the triangle.

Click here to download a sheet to colour in your solutions.

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