An article for teachers which discusses the differences between
ratio and proportion, and invites readers to contribute their own
In the ancient city of Atlantis a solid rectangular object called a
Zin was built in honour of the goddess Tina. Your task is to
determine on which day of the week the obelisk was completed.
A garrison of 600 men has just enough bread ... but, with the news
that the enemy was planning an attack... How many ounces of bread a
day must each man in the garrison be allowed, to hold out 45. . . .
The triathlon is a physically gruelling challenge. Can you work out which athlete burnt the most calories?
Mainly for teachers. More mathematics of yesteryear.
Meg and Mo need to hang their marbles so that they balance. Use the
interactivity to experiment and find out what they need to do.
If it takes four men one day to build a wall, how long does it take
60,000 men to build a similar wall?
Mo has left, but Meg is still experimenting. Use the interactivity
to help you find out how she can alter her pouch of marbles and
still keep the two pouches balanced.
Meg and Mo still need to hang their marbles so that they balance,
but this time the constraints are different. Use the interactivity
to experiment and find out what they need to do.