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?