Give the kids a grapher with parametric sliders, and they'll give you a decent polygonal fit to points, then show you the local peaks. Source: Actually doing calculus-inspired activities with enthusiastic K-2 kids. Prediction: the kids who don't care are more into topology than analysis.
Dr. Maria at Natural Math
Prediction: few will find this funny, but those who do... www.smbc-comics.com/comic/marshm... #mathcomic from @zachweinersmith.bsky.social
