Being collaborative

problem
Birthday cakes

Age

5 to 7

Challenge level

Jack's mum bought some candles to use on his birthday cakes and when his sister was born, she used them on her cakes too. Can you use the information to find out when Kate was born?
problem
Domino sequences

Age

5 to 7

Challenge level

Find the next two dominoes in these sequences.
problem
Cubes cut into four pieces

Age

5 to 7

Challenge level

Eight children each had a cube made from modelling clay. They cut them into four pieces which were all exactly the same shape and size. Whose pieces are the same? Can you decide who made each set?
problem
Grouping goodies

Age

5 to 7

Challenge level

Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?
problem
Making sticks

Age

5 to 7

Challenge level

Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?
problem
Butterfly flowers

Age

5 to 7

Challenge level

Can you find two butterflies to go on each flower so that the numbers on each pair of butterflies adds to the number on their flower?
problem
The puzzling sweet shop

Age

5 to 11

Challenge level

There were cola bottles for 2p, mini eggs for 3p, marshmallow twists for 5p and lollipops for 7p in the sweet shop. What could each of the children buy with their money?
problem
Chain of changes

Age

5 to 7

Challenge level

Arrange the shapes in a line so that you change either colour or shape in the next piece along. Can you find several ways to start with a blue triangle and end with a red circle?
problem
One big triangle

Age

5 to 7

Challenge level

Make one big triangle so the numbers that touch on the small triangles add to 10.
problem
4 dom

Age

5 to 11

Challenge level

Use these four dominoes to make a square that has the same number of dots on each side.