Find the exact difference between the largest ball and the smallest ball on the Hepta Tree and then use this to work out the MAGIC NUMBER!
There are four equal weights on one side of the scale and an apple on the other side. What can you say that is true about the apple and the weights from the picture?
Some Games That May Be Nice or Nasty for an adult and child. Use your knowledge of place value to beat your opponent.
Dicey Operations for an adult and child. Can you get close to 1000 than your partner?
Here is a chance to play a version of the classic Countdown Game.
What do you notice about the date 03.06.09? Or 08.01.09? This challenge invites you to investigate some interesting dates yourself.
Four Go game for an adult and child. Will you be the first to have four numbers in a row on the number line?
Mr. Sunshine tells the children they will have 2 hours of homework. After several calculations, Harry says he hasn't got time to do this homework. Can you see where his reasoning is wrong?
Can you work out how many of each kind of pencil this student bought?
There are nasty versions of this dice game but we'll start with the nice ones...
This activity challenges you to decide on the 'best' number to use in each statement. You may need to do some estimating, some calculating and some research.
How might you use mathematics to improve your chances of guessing the number of sweets in a jar?
This challenge is a game for two players. Choose two of the numbers to multiply or divide, then mark your answer on the number line. Can you get four in a row?
Make an estimate of how many light fittings you can see. Was your estimate a good one? How can you decide?
Who said that adding, subtracting, multiplying and dividing couldn't be fun?
Can you deduce the pattern that has been used to lay out these bottle tops?
Examine these estimates. Do they sound about right?
From the information you are asked to work out where the picture was taken. Is there too much information? How accurate can your answer be?
Bluey-green, white and transparent squares with a few odd bits of shapes around the perimeter. But, how many squares are there of each type in the complete circle? Study the picture and make. . . .