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Prompt Cards
These two group activities use mathematical reasoning - one is numerical, one geometric.
Consecutive Numbers
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Exploring Wild & Wonderful Number Patterns
EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.
Age 7 to 11 Short
Challenge Level
Why do this problem?
This short challenge presents children with the opportunity of
exploring number operations and practising mental arithmetic in a
motivating context.
Key questions
What kind of number is $15$?
How will you remember what you have pressed?
What have you tried so far?
Possible extension
You could challenge children to explain how they would work
out, say $24 \times 37$ if a particular number on the calculator
was broken. How would they do it if the $2$ was broken? What about
if the $1$ and $2$ were broken etc.?
Possible support
Having calculators to hand will allow learners to check their
ideas and they may need to be reminded to record the process in
some way.
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NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.