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Squeezed In
problem

Squeezed In

14 to 16
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Weekly Problem 9 - 2017
What integer x makes x/9 lie between 71/7 and 113/11?
Corner Cut
problem

Corner Cut

11 to 14
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Weekly Problem 23 - 2017
Three small equilateral triangles of the same size are cut from the corners of a larger equilateral triangle. What is the side length of the small triangles?
Move those Halves
problem

Move Those Halves

7 to 11
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For this task, you'll need an A4 sheet and two A5 transparent sheets. Decide on a way of arranging the A5 sheets on top of the A4 sheet and explore ...

Enriching Data Handling
article

Enriching Data Handling

5 to 11
This article for teachers looks at some suggestions taken from the NRICH website that offer a broad view of data and ask some more probing questions about it.
P is for posing
article

P is for Posing

5 to 11
In this article for Primary teachers, we suggest a four step data handling model, based on the work of Alan Graham.
Bridge builder
problem
Favourite

Bridge Builder

16 to 18
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In this short problem we investigate the tensions and compressions in a framework made from springs and ropes.
Lengthy journeys
problem

Lengthy Journeys

7 to 11
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Investigate the different distances of these car journeys and find out how long they take.
Making Shapes
problem

Making Shapes

5 to 7
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Arrange any number of counters from these 18 on the grid to make a rectangle. What numbers of counters make rectangles? How many different rectangles can you make with each number of counters?
Perfect Eclipse
problem

Perfect Eclipse

14 to 16
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Use trigonometry to determine whether solar eclipses on earth can be perfect.
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