Working systematically

problem

Order the Changes

Age

7 to 11

Challenge level

1 out of 3

Can you order pictures of the development of a frog from frogspawn and of a bean seed growing into a plant?
problem

Polydron

Age

7 to 11

Challenge level

1 out of 3

This activity investigates how you might make squares and pentominoes from Polydron.
problem

Calendar Sorting

Age

7 to 11

Challenge level

1 out of 3

The pages of my calendar have got mixed up. Can you sort them out?
problem

How Long Does It Take?

Age

7 to 11

Challenge level

1 out of 3

How long does it take to brush your teeth? Can you find the matching length of time?
problem

Sums and Differences 1

Age

7 to 11

Challenge level

1 out of 3

This challenge focuses on finding the sum and difference of pairs of two-digit numbers.
problem

Sums and Differences 2

Age

7 to 11

Challenge level

1 out of 3

Find the sum and difference between a pair of two-digit numbers. Now find the sum and difference between the sum and difference! What happens?
game

First Connect Three for Two

Age

7 to 11

Challenge level

1 out of 3

First Connect Three game for an adult and child. Use the dice numbers and either addition or subtraction to get three numbers in a straight line.
problem

Folded Number Line

Age

7 to 11

Challenge level

1 out of 3

When I fold a 0-20 number line, I end up with 'stacks' of numbers on top of each other. These challenges involve varying the length of the number line and investigating the 'stack totals'.
problem

Sticky Dice

Age

7 to 11

Challenge level

1 out of 3

Throughout these challenges, the touching faces of any adjacent dice must have the same number. Can you find a way of making the total on the top come to each number from 11 to 18 inclusive?
problem

Rearranged Rectangle

Age

7 to 11

Challenge level

1 out of 3

How many different rectangles can you make using this set of rods?