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

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

Can you help the children in Mrs Trimmer's class make different shapes out of a loop of string?

Can you find ways of joining cubes together so that 28 faces are visible?

Investigate and explain the patterns that you see from recording just the units digits of numbers in the times tables.

In a square in which the houses are evenly spaced, numbers 3 and 10 are opposite each other. What is the smallest and what is the largest possible number of houses in the square?

There are ten children in Becky's group. Can you find a set of numbers for each of them? Are there any other sets?

You found many different ways of finding the number on the reverse of the hundred square.

In this article Jenny talks about Assessing Pupils' Progress and the use of NRICH problems.

In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?