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An Introduction to Magic Squares

Find out about Magic Squares in this article written for students. Why are they magic?!

Consecutive Negative Numbers

Do you notice anything about the solutions when you add and/or subtract consecutive negative numbers?

Always a Multiple?

Think of a two digit number, reverse the digits, and add the numbers together. Something special happens...

Exploring Simple Mappings

Age 11 to 14 Challenge Level:

The mapping below was created using the NRICH Number Plumber.

Click here to watch a video explaining how to use the Number Plumber.

Click on the mapping to explore the relationship between the function and its graph.

times 2, add three function machine

Now replace the 2 and 3 with other values. How does this affect the graph?

What happens when you try division instead of multiplication, or subtraction instead of addition?

Describe and explain any generalisations you make.