Place value
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problemWriting digits
Age5 to 7Challenge level
Lee was writing all the counting numbers from 1 to 20. She stopped for a rest after writing seventeen digits. What was the last number she wrote?
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problem6 beads
Age5 to 7Challenge level
If you put three beads onto a tens/ones abacus you can make the numbers 3, 30, 12 or 21. What numbers can be made with six beads?
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problemDouble digit
Age11 to 14Challenge level
Choose two digits and arrange them to make two double-digit numbers. Now add your double-digit numbers. Now add your single digit numbers. Divide your double-digit answer by your single-digit answer. Try lots of examples. What happens? Can you explain it? -
articleA 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. -
articlePupils' recording or pupils recording
This article, written for teachers, looks at the different kinds of recordings encountered in Primary Mathematics lessons and the importance of not jumping to conclusions! -
articleAdding with the abacus
Nowadays the calculator is very familiar to many of us. What did people do to save time working out more difficult problems before the calculator existed? -
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articlePath of discovery series 3: I do and I understand
Marion Bond recommends that children should be allowed to use 'apparatus', so that they can physically handle the numbers involved in their calculations, for longer, or across a wider ability band, than is currently the norm.
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articleNumber sense series: a sense of 'ten' and place value
Once a basic number sense has developed for numbers up to ten, a strong 'sense of ten' needs to be developed as a foundation for both place value and mental calculations.