In this simulation of a balance, you can drag numbers and parts of number sentences on to the trays. Have a play!
Four bags contain a large number of 1s, 3s, 5s and 7s. Can you pick any ten numbers from the bags so that their total is 37?
How many possible symmetrical necklaces can you find? How do you know you've found them all?
Are these statements always true, sometimes true or never true?
Are these statements always true, sometimes true or never true?
Can you end up with all the occurrences of the same letter in this two-player game?
The large rectangle is divided into a series of smaller quadrilaterals and triangles. Can you untangle what fractional part is represented by each of the shapes?
What is the greatest number of counters you can place on the grid below without four of them lying at the corners of a square?
