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Excel Interactive Resource: Interactive Division
Use an Excel to investigate division. Explore the relationships
between the process elements using an interactive spreadsheet.
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Excel Interactive Resource: Make a Copy
Investigate factors and multiples using this interactive Excel spreadsheet. Use the increment buttons for experimentation and feedback.
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Polygonals
7 to 11
Polygonal numbers are those that are arranged in shapes as they enlarge. Explore the polygonal numbers drawn here.
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Dalmatians
14 to 18
Investigate the sequences obtained by starting with any positive 2 digit number (10a+b) and repeatedly using the rule 10a+b maps to 10b-a to get the next number in the sequence.
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Prepare for University - Mathematical Chemistry
10 of our best problems to help you prepare to study chemistry at university.
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Using Questioning to Stimulate Mathematical Thinking
Good questioning techniques have long being regarded as a fundamental tool of effective teachers. This article for teachers looks at different categories of questions that can promote mathematical thinking.
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Witch's Hat
11 to 16
What shapes should Elly cut out to make a witch's hat? How can she make a taller hat?
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Back to the Practical?
In this article for teachers, Bernard uses some problems to suggest
that once a numerical pattern has been spotted from a practical
starting point, going back to the practical can help explain why
the pattern occurs.
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Tic Tac Toe
11 to 14
In the game of Noughts and Crosses there are 8 distinct winning
lines. How many distinct winning lines are there in a game played
on a 3 by 3 by 3 board, with 27 cells?