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The history of negative numbers
This article -useful for teachers and learners - gives a short account of the history of negative numbers.
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Going first
This article shows how abstract thinking and a little number theory throw light on the scoring in the game Go.
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A story about absolutely nothing
This article for the young and old talks about the origins of our number system and the important role zero has to play in it.
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Stacks of maths!
In this article for teachers, Bernard gives an example of taking an
initial activity and getting questions going that lead to other
explorations.
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Models in mind
This article looks at how models support mathematical thinking about numbers and the number system
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Why dialogue matters in primary proof
In this article for Primary teachers, Ems explores three essential features of proof, all of which can be developed in the context of primary mathematics through talk.
problem
Favourite
Plus minus
14 to 16
Can you explain the surprising results Jo found when she calculated the difference between square numbers?
problem
Favourite
Triangle midpoints
14 to 16
You are only given the three midpoints of the sides of a triangle. How can you construct the original triangle?
