Exploring and noticing

problem

So It's 28

Age

5 to 7

Challenge level

Here is your chance to investigate the number 28 using shapes, cubes ... in fact anything at all.
problem

Starfish Spotting

Age

5 to 7

Challenge level

How many starfish could there be on the beach, and how many children, if I can see 28 arms?
problem

Amazing Alphabet Maze

Age

5 to 7

Challenge level

Can you go from A to Z right through the alphabet in the hexagonal maze?
problem

Domino Join Up

Age

5 to 7

Challenge level

Can you arrange fifteen dominoes so that all the touching domino pieces add to 6 and the ends join up? Can you make all the joins add to 7?
problem

Find a Path

Age

5 to 7

Challenge level

Can you find a path from a number at the top of this network to the bottom which goes through each number from 1 to 9 once and once only?
problem

Number Squares

Age

5 to 11

Challenge level

Start with four numbers at the corners of a square and put the total of two corners in the middle of that side. Keep going... Can you estimate what the size of the last four numbers will be?
problem

Stairs

Age

5 to 11

Challenge level

This challenge is to design different step arrangements, which must go along a distance of 6 on the steps and must end up at 6 high.
problem

Lawn Border

Age

5 to 11

Challenge level

If I use 12 green tiles to represent my lawn, how many different ways could I arrange them? How many border tiles would I need each time?
problem

Street Sequences

Age

5 to 11

Challenge level

Investigate what happens when you add house numbers along a street in different ways.
problem

It's a Fence!

Age

5 to 11

Challenge level

In this challenge, you will work in a group to investigate circular fences enclosing trees that are planted in square or triangular arrangements.