An introduction to proof by contradiction, a powerful method of mathematical proof.
If the yellow equilateral triangle is taken as the unit for area,
what size is the hole ?
Tim Rowland introduces irrational numbers
Using the interactivity, can you make a regular hexagon from yellow
triangles the same size as a regular hexagon made from green
What fractions can you find between the square roots of 56 and 58?
Ranging from kindergarten mathematics to the fringe of research
this informal article paints the big picture of number in a non
technical way suitable for primary teachers and older students.
This article for pupils and teachers looks at a number that even the great mathematician, Pythagoras, found terrifying.
Read all about Pythagoras' mathematical discoveries in this article written for students.
The number 2.525252525252.... can be written as a fraction. What is
the sum of the denominator and numerator?
How many differently shaped rectangles can you build using these
equilateral and isosceles triangles? Can you make a square?