The other day Franci and I were talking about subjects we studied in high school, and Marica asked what “calculus” was. Franci said it was a type of maths (Marica’s been learning her written numbers). Marica of course replied that “she could do that”, but Franci said she was probably a bit young for calculus.
That was enough of a challenge for me, so I decided to give Marica her first calculus lesson. If you keep it graphical and leave out the algebra, calculus is actually a fairly simple subject — areas under curves (read “colouring in”) and slopes (“going up and down hills”).
Below is a photo of our worksheet. Diagram 1 is me showing her how to do integration. In diagram 2 I’m explaining differentiation. And in diagram 3 I asked her to draw a curve, and then calculate the area under the curve from point A to point B using graphical techniques (she did a pretty good job).