You may also like

problem icon

Polydron

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

problem icon

Eight Dominoes

Using the 8 dominoes make a square where each of the columns and rows adds up to 8

problem icon

Prime Magic

Place the numbers 1, 2, 3,..., 9 one on each square of a 3 by 3 grid so that all the rows and columns add up to a prime number. How many different solutions can you find?

Tubular Path

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2

Move the green spot along the tube by moving the yellow spot.
Explain how you did it.

Full Screen Version
This text is usually replaced by the Flash movie.


The yellow spot does not follow this grey tube.
I wonder if there is a tube which the yellow spot and the green spot would both follow?
Could you draw one?