Counting

In this problem, we're investigating the number of steps we would climb up or down to get out of or into the swimming pool. How could you number the steps below the water?

Imagine a pyramid which is built in square layers of small cubes. If we number the cubes from the top, starting with 1, can you picture which cubes are directly below this first cube?

Investigate the different ways these aliens count in this challenge. You could start by thinking about how each of them would write our number 7.

Can you complete this jigsaw of the 100 square?

Delight your friends with this cunning trick! Can you explain how it works?

Solve this Sudoku puzzle whose clues are in the form of sums of the numbers which should appear in diagonal opposite cells.

What could these drawings, found in a cave in Spain, represent?

25 students are queuing in a straight line. How many are there between Julia and Jenny?

Some children were playing a game. Make a graph or picture to show how many ladybirds each child had.

How is it possible to predict the card?