Here is a machine with four coloured lights. Can you make two lights switch on at once? Three lights? All four lights?
This challenge invites you to create your own picture using just straight lines. Can you identify shapes with the same number of sides and decorate them in the same way?
These spinners will give you the tens and unit digits of a number. Can you choose sets of numbers to collect so that you spin six numbers belonging to your sets in as few spins as possible?
Which pairs of cogs let the coloured tooth touch every tooth on the other cog? Which pairs do not let this happen? Why?
Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?
What happens to the area and volume of 2D and 3D shapes when you enlarge them?
In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?
Investigate the sum of the numbers on the top and bottom faces of a line of three dice. What do you notice?
