From a chromatography lab designed to solve a mystery to puzzle races, these activities get high school students talking—while doing science.

Tiny tweaks can make a big difference for calming chaos in the classroom—these research-backed tips can help teachers get started.

In my classroom I assign roles such as a “greeter” who will greet a visitor at the door, a “hostess” to walk families to their designated seats, and an “itinerary supplier” who will give the visitor a ...