Activity book that is a guided inquiry into the question: Why "gear" does not work when using wheels heading in car's heading.
The solution's even better than the problem! I especially like the graphing to really drive the point home. I had to read some of the text a few times to understand. Might be a bit clearer.
Loved having scripts inside the book to incrementally describe a concept. Very useful.
I liked the use of a graph to compare the results of the different methods
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