My sister is in 10th grade. She doesn't seem to understand the concept of time varying functions (current, light, sound wave forms etc). I explained her in easiest possible terms. She got it but not very comfortable with the concepts.
So, instead of explaining. I simply wanted her to take a stopwatch & measure "something" and tabulate all the values. Then plot them on a graph paper.
Now I'm thinking of that "something" that she can measure. I want something that has following properties:
- It must vary every second or two. (because it would be more intuitive than something that varies after a while).
- Its variation should be function of some known function like. Periodic function like Sine or Cosine would be great but any known function would do.
- Please see the tag "home-experiment". I mean that :)
I cannot think of any such thing. I thought may be you could help.