Can you each work out the number on your card? What do you
notice? How could you sort the cards? If you have ten counters
numbered 1 to 10, how many can you put into pairs that add to
10? Which ones do you have to leave out? This project challenges
you to work out the number of cubes hidden under a cloth. What
questions would you like to ask? Take 5 cubes of one colour and
2 of another colour. How many different ways can you join them
if the 5 must touch the table and the 2 must not touch the
table? Arrange 9 red cubes, 9 blue cubes and 9 yellow cubes into
a large 3 by 3 cube. No row or column of cubes must contain two
cubes of the same colour. Ahmed is making rods using different
numbers of cubes. Which rod is twice the length of his first
rod? If you split the square into these two pieces, it is
possible to fit the pieces together again to make a new shape.
How many new shapes can you make? Make your own double-sided
magic square. But can you complete both sides once you've made
the pieces? In how many ways