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Number - Primary Teachers
This collection of resources will support understanding of number.
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problem
Euler's Squares
14 to 16
Euler found four whole numbers such that the sum of any two of the numbers is a perfect square...
problem
Sangaku
16 to 18
The square ABCD is split into three triangles by the lines BP and CP. Find the radii of the three inscribed circles to these triangles as P moves on AD.
problem
Beads
7 to 11
Three beads are threaded on a circular wire and are coloured either red or blue. Can you find all four different combinations?
problem
Cyclic Triangles
16 to 18
Make and prove a conjecture about the cyclic quadrilateral inscribed in a circle of radius r that has the maximum perimeter and the maximum area.
problem
Number Squares
5 to 11
Start with four numbers at the corners of a square and put the
total of two corners in the middle of that side. Keep going... Can
you estimate what the size of the last four numbers will be?
problem
Von Koch Curve
16 to 18
Make a poster using equilateral triangles with sides 27, 9, 3 and 1 units assembled as stage 3 of the Von Koch fractal. Investigate areas & lengths when you repeat a process infinitely often.
problem
Favourite
Elevenses
11 to 14
How many pairs of numbers can you find that add up to a multiple of 11? Do you notice anything interesting about your results?
problem
Favourite
Fibonacci Surprises
11 to 14
Play around with the Fibonacci sequence and discover some surprising results!
