problem

### Quadratic Patterns

Surprising numerical patterns can be explained using algebra and diagrams...

problem
###
Quadratic Patterns

Surprising numerical patterns can be explained using algebra and diagrams...

problem
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Bird-Brained

How many eggs should a bird lay to maximise the number of chicks
that will hatch? An introduction to optimisation.

problem
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Partly Circles

What is the same and what is different about these circle
questions? What connections can you make?

problem
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Resistance

Find the equation from which to calculate the resistance of an
infinite network of resistances.