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problem
1 out of 3
Counting on Letters
11 to 14
1 out of 3
The letters of the word ABACUS have been arranged in the shape of a
triangle. How many different ways can you find to read the word
ABACUS from this triangular pattern?
page
Problem Solving, Using and Applying and Functional Mathematics
Problem solving is at the heart of the NRICH site. All the problems
give learners opportunities to learn, develop or use mathematical
concepts and skills. Read here for more information.
article
NRICH at Every Stage
Whether you are reflecting on the mathematical developments children have made over the year, or thinking about activities for a transition day, this article offers plenty of ideas and tasks to support you.
problem
1 out of 3
Logo Challenge 11 - More on Circles
11 to 16
1 out of 3
Thinking of circles as polygons with an infinite number of sides - but how does this help us with our understanding of the circumference of circle as pi x d? This challenge investigates this relationship.
problem
3 out of 3
Sometimes We Lose Things
7 to 11
3 out of 3
Well now, what would happen if we lost all the nines in our number system? Have a go at writing the numbers out in this way and have a look at the multiplications table.
article
Triangle Numbers in the Classroom
Some of our experiences of discovering and using triangle numbers in a range of contexts.
problem
1 out of 3
Triangular Hexagons
7 to 11
1 out of 3
Investigate these hexagons drawn from different sized equilateral
triangles.