Can you find 2 butterflies to go on each flower so that the numbers on each pair of butterflies adds to the same number as the one on the flower?
Take three differently coloured blocks - maybe red, yellow and blue. Make a tower using one of each colour. How many different towers can you make?
As you come down the ladders of the Tall Tower you collect useful spells. Which way should you go to collect the most spells?
Using compass points, can you describe up to ten paths on this map so that you bring as many gems back home as possible?
One quarter of these coins are heads but when I turn over two coins, one third are heads. How many coins are there?
Can you make square numbers by adding two prime numbers together?
There are lots of different methods to find out what the shapes are worth - how many can you find?
In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?