Stage: 2 Challenge Level: 
Can you use any of the times you've made so far to help with
others?
Do you have a system for trying out your ideas?
Why would it help to have a way of making 1 minute?
Do you have a system for trying out your ideas?
Why would it help to have a way of making 1 minute?
Investigations. Practical Activity. Trial and improvement. Interactivities. Working systematically. Combinations. Multiplication & division. Addition & subtraction. Visualising. Factors and multiples.
Published March 1998.
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