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Interactive spinners
This interactivity invites you to make conjectures and explore probabilities of outcomes related to two independent events.
Harmonically
What do functions do for tiny x?
Looking at small values of functions. Motivating the existence of the Maclaurin expansion.
Population dynamics - part 3
Changing areas, changing volumes
How can you change the surface area of a cuboid but keep its volume the same? How can you change the volume but keep the surface area the same?
Walking round a triangle
This ladybird is taking a walk round a triangle. Can you see how much she has turned when she gets back to where she started?
Exploring diagonals
Move the corner of the rectangle. Can you work out what the purple number represents?
Lattice points on a line
How many lattice points are there in the first quadrant that lie on the line 3x + 4y = 59 ?
Tourism
If you can copy a network without lifting your pen off the paper and without drawing any line twice, then it is traversable. Decide which of these diagrams are traversable.