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Can you find the chosen number from this square using the clues below?

1. The number is odd.

2. It is a multiple of three.

3. It is smaller than 7 x 4.

4. It has an even tens digit.

5. It is the greater of the two possibilities.

[…]

## NA5 GROWTH AND DECAY – FINANCIAL MATHEMATICS

*By toni On 28 August, 2018 · Leave a Comment*

This workshop guide provides learning activities that explore the ways in which arithmetic and geometric series are used in simple and compound interest calculations related to loans (including pay-day loans) , investments, annuities, hire-purchase, inflation etc. and there is an explanation of how APR is calculated. Ideas are given for practical ways […]

## Grades 4 to 7 Two by Two Puzzle

*By toni On 25 August, 2018 · Leave a Comment*

Can you find numbers to replace the ? marks to solve this two by two multiplication puzzle?

Can you explain how it works?

How does the diagram below connect with the multiplication?

Use the two grids below to do the two multiplications:

72 × 25 and 50 […]

## Grades 8 and 9 Pizza

*By toni On 22 July, 2018 · Leave a Comment*

On Monday Dolly, Kapa and Lolo cut a pizza into equal sized pieces and share the pizza in the ratio 4 : 3 : 5. How many pieces were there and what fraction did each person get?

On Tuesday they buy a pizza of the same size and share it in the […]

## Grades 4 to 9 Durer’s Magic Square

*By toni On 16 March, 2018 · Leave a Comment*

Add the columns one by one, add the rows, then add the diagonals. What do you notice?

This is Albrecht Durer’s supermagic square from his famous engraving Melencolia dated 1514. Can you see it at the top right hand corner of the engraving under the bell? It has many […]

## Grades 4 to 7 MD

*By toni On 27 January, 2018 · Leave a Comment*

What do you notice about the numbers in this square?

Write numbers in the blank boxes in squares B, C. and D that make the same patterns as in square A.

Cards 1 to 16 all use multiplication or division and give clues about the numbers in squares A, B, C […]

## Grades 6 to 9 FDP Loops

*By toni On 25 January, 2018 · Leave a Comment*

The aim is to make square domino loops, like the one in the picture, from 4 dominoes matching the fractions, decimals and percentages. Start with any domino and find 2 other dominoes to match the ends of the first domino. For example, the [3/10 and 10%] domino matches with 30% at […]

## LOWER SECONDARY A3 FUNCTIONS AND INVERSE FUNCTIONS

*By toni On 23 January, 2018 · Leave a Comment*

Number games that develop recognition and understanding of functions and inverse functions and the ability to create formulas.

Click here to download a pdf with all you need to run your own professional development workshop.

## LOWER SECONDARY N2 PLACE VALUE AND DECIMALS

*By toni On 23 January, 2018 · Leave a Comment*

A collection of activities and games to develop a confident understanding of place value and decimals and skills at calculating with decimals and estimating the results of decimal calculations.

Click here to download a pdf with all you need to run your own professional development workshop.

## Grades 5 to 7 Spin High or Low

*By toni On 20 January, 2018 · Leave a Comment*

To win this game you need to understand place value and the game can easily be adapted to include decimals. All versions of the game can be played by a whole class as a lesson starter or in pairs.

You will need a 0-9 spinner like the one in the picture or […]

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