The magic triangle
A triangle can be made by arranging 4 shapes on a 5 x 13 grid.
By re-arranging the shapes a new triangle can be made.
The pieces in the lower triangle are exactly the same as those in the upper triangle, but now seem to take up less space so there is one blank square
Where does the white square come from?Hover your mouse here for the solution
Here is another similar puzzle:Hover your mouse here for the solution
A bear walks 1 kilometre south, 1 kilometre west and then 1 kilometre north
He ends up in exactly the same place he started.
What colour is the bear.
4 litres of water problem
You are camping be the edge of a stream and a recipe calls for EXACTLY 4 litres of water.
Unfortunately you only have two empty containers, one that holds 3 litres of water and one that holds 5 litres.
How can you get exactly 4 litres (you can fill and empty the containers as many times as you like using water from the stream).Hover your mouse here for the solution
Links to science games and puzzles
Do you know any other puzzles?
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