Estimating and approximating

problem

Building Approximations for Sin(x)

Age

16 to 18

Challenge level

Build up the concept of the Taylor series
problem

Branching Processes and Extinction

Age

16 to 18

Challenge level

An advanced mathematical exploration supporting our series of articles on population dynamics for advanced students.
problem

Today's Date - 01/06/2009

Age

5 to 11

Challenge level

What do you notice about the date 03.06.09? Or 08.01.09? This challenge invites you to investigate some interesting dates yourself.
problem

What's My Weight?

Age

7 to 11

Challenge level

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?
problem

Back to School

Age

7 to 11

Challenge level

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?
game

Four Go for Two

Age

7 to 11

Challenge level

Four Go game for an adult and child. Will you be the first to have four numbers in a row on the number line?
game

Dicey Operations in Line for Two

Age

7 to 11

Challenge level

Dicey Operations for an adult and child. Can you get close to 1000 than your partner?
problem

The Magic Number and the Hepta-Tree

Age

7 to 11

Challenge level

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!
game

Nice or Nasty for Two

Age

7 to 14

Challenge level

Some Games That May Be Nice or Nasty for an adult and child. Use your knowledge of place value to beat your opponent.
problem

A Jar of Teddies

Age

7 to 14

Challenge level

How many teddies are in the jar? How many teddies could you fit in your classroom?