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Three Ball Line Up

Use the interactivity to help get a feel for this problem and to find out all the possible ways the balls could land.

Birds in the Garden

This activity asks you to collect information about the birds you see in the garden. Are there patterns in the data or do the birds seem to visit randomly?

Two and One

Age 5 to 7
Challenge Level

Two children are playing a game with three balls, two blue ones and one red one.
Terry is red and Ali is blue.


two blue balls and a red ball

They toss up the balls, which run down a slope so that they land in a row of three, like this:


blue, red, blue balls in a line

The colour in the middle wins that round. Is this a fair game?
Who do you think will win?

Try using the interactivity below to get a feel for the game. (The sum column tells you how many times Terry has won so far.)