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Simon's Age

Weekly Problem 3 - 2016
How many times has Simon's age changed from a square to a prime?

problem

Stacking Shapes

11 to 14

Weekly Problem 28 - 2017
The diagram on the right shows an equilateral triangle, a square and a regular pentagon. What is the sum of the interior angles of the resulting polygon?

problem

Travelator

14 to 16

When Andrew arrives at the end of the walkway, how far is he ahead of Bill?

problem

Right-angled Midpoints

14 to 16

If the midpoints of the sides of a right angled triangle are joined, what is the perimeter of this new triangle?

problem

The Grand Old Duke of York

14 to 16

What percentage of his 10,000 men did the Grand Old Duke of York have left when he arrived back at the bottom of the hill?

problem

Drawing

5 to 11

This activity encourages you to measure the length of lines accurately.

problem

Spot the Fake

14 to 16

One of N coins is slightly heavier than the others. How large can N be if the coin can be determined with only two weighings with a set of scales?

article

Exploring the Challenge of Online Mediation

This reports on students’ responses to a mathematical problem from the NRICH website. In particular, we were interested in students’ responses to a question that provided an unusual challenge. We have used the findings to suggest mediation strategies that could be offered on a website to meet the needs of all learners. These mediation strategies take into account the strategies used by teachers in classrooms.

problem

Erratic Quadratic

16 to 18

Can you find a quadratic equation which passes close to these points?

problem

Favourite

Different Deductions

7 to 11

There are lots of different methods to find out what the shapes are worth - how many can you find?

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Simon's Age

Stacking Shapes

Travelator

Right-angled Midpoints

The Grand Old Duke of York

Drawing

Spot the Fake

Exploring the Challenge of Online Mediation

Erratic Quadratic

Different Deductions