Working systematically

problem
Favourite

First Connect Three

Age

7 to 11

Challenge level

Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?
problem

Putting Two and Two Together

Age

7 to 11

Challenge level

In how many ways can you fit two of these yellow triangles together? Can you predict the number of ways two blue triangles can be fitted together?
problem

Tiling

Age

7 to 11

Challenge level

An investigation that gives you the opportunity to make and justify predictions.
problem

Cubes Here and There

Age

7 to 11

Challenge level

How many shapes can you build from three red and two green cubes? Can you use what you've found out to predict the number for four red and two green?
problem
Favourite

Magic Vs

Age

7 to 11

Challenge level

Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?
problem
Favourite

Bryony's Triangle

Age

7 to 11

Challenge level

Watch the video to see how to fold a square of paper to create a flower. What fraction of the piece of paper is the small triangle?
problem

Order the Changes

Age

7 to 11

Challenge level

Can you order pictures of the development of a frog from frogspawn and of a bean seed growing into a plant?
problem
Favourite

Fifteen Cards

Age

7 to 11

Challenge level

Can you use the information to find out which cards I have used?
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Polydron

Age

7 to 11

Challenge level

This activity investigates how you might make squares and pentominoes from Polydron.
problem
Favourite

Domino Sets

Age

7 to 11

Challenge level

How do you know if your set of dominoes is complete?