Stage: 1 Challenge Level: 
Weiye, Susannah (from Headington Junior School), Harriet and Joshua (from Bedfordshire) all agree on this solution:
Chandra - ham
Jane - cheese
Terry - jam
Harry - tomato
Addition & subtraction. Combinations. Factors and multiples. Visualising. Investigations. Practical Activity. Working systematically. Interactivities. Multiplication & division. Trial and improvement.
Published March 1999.
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