A task involving the equivalence between fractions, percentages and decimals which depends on members of the group noticing the needs of others and responding.

Match the cards of the same value.

Using the picture of the fraction wall, can you find equivalent fractions?

Can you find combinations of strips of paper which equal the length of the black strip? If the length of the black is 1, how could you write the sum of the strips?

Can you find ways to make twenty-link chains from these smaller chains?

The Egyptians expressed all fractions as the sum of different unit fractions. The Greedy Algorithm might provide us with an efficient way of doing this.

A jigsaw where pieces only go together if the fractions are equivalent.

Where will the point stop after it has turned through 30 000 degrees? I took out my calculator and typed 30 000 ÷ 360. How did this help?

The number 2.525252525252.... can be written as a fraction. What is the sum of the denominator and numerator?