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problem
Diagonal in a spiral
Investigate the totals you get when adding numbers in threes on the diagonal of this pattern.
problem
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Pouring problem
What do you think is going to happen in this video clip? Are you surprised?
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Recommended books
article
An introduction to complex numbers
A short introduction to complex numbers written primarily for students aged 14 to 19.
article
High jumping
How high can a high jumper jump? How can a high jumper jump higher without jumping higher? Read on...
problem
Ideal axes
Explore how can changing the axes for a plot of an equation can
lead to different shaped graphs emerging