Is it possible to draw a 5-pointed star without taking your pencil off the paper? Is it possible to draw a 6-pointed star in the same way without taking your pen off?
Use the information about the ducks on a particular farm to find out which of the statements about them must be true.
Find out about Magic Squares in this article written for students. Why are they magic?!
Take three numbers that are 'next door neighbours' when you count. These are called consecutive numbers.
Add them together.
What do you notice?
Take another three consecutive numbers and add them together.
Can you prove that this is always true by looking carefully at one of your examples?