Short motivational videos

Here you see examples of very powerful constructions which can me made just under 5 minutes.

The Sun the Earth and the Moon

Introducing the straight line

Showing the derivatives slowly

Showing that f(x)=f'(x) for f(x)=e^x

Visualising the task of finding the primitive function with a condition

Can I live on reinvesting 1 money unit: Bernoulli compound interest problem