Stage: 1 Challenge Level: 
There were 22 legs creeping across the web. How many flies? How many spiders?
Thank you to Lachlan, age 5, for the picture.
Combinations. Interactivities. Generalising. Multiplication & division. Addition & subtraction. Working systematically. Comparing and Ordering numbers. Investigations. Factors and multiples. Trial and improvement.
Published November 2000.
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