Your Solutions - Stage 3 & 4

Multiples Sudoku

Stage: 3 Challenge Level: Challenge Level:1

Each clue in this Sudoku is the product of the two numbers in adjacent cells.

Shape Products

Stage: 3 Challenge Level: Challenge Level:1

These eleven shapes each stand for a different number. Can you use the multiplication sums to work out what they are?

Number Families

Stage: 3 Challenge Level: Challenge Level:1

How many different number families can you find?

Alison's Quilt

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

Nine squares are fitted together to form a rectangle. Can you find its dimensions?

Building Tetrahedra

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

Can you make a tetrahedron whose faces all have the same perimeter?

Isometric Areas

Stage: 3 Challenge Level: Challenge Level:1

We usually use squares to measure area, but what if we use triangles instead?

More Isometric Areas

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

Isometric Areas explored areas of parallelograms in triangular units. Here we explore areas of triangles...

Of All the Areas

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

Can you find a general rule for finding the areas of equilateral triangles drawn on an isometric grid?

Towering Trapeziums

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

Can you find the areas of the trapezia in this sequence?

The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. More information on many of our other activities can be found here.
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NRICH is part of the family of activities in the Millennium Mathematics Project.