Raising a hand in class is hard. Here’s what you can do to make it easier—I wrote a piece about the topic for Character Lab as a Tip of the Week : “Look at the results.

The two-year study, conducted 2018-2020 in the Netherlands with students aged 5 to 13, monitored carbon dioxide levels in classrooms and collected data on student test scores.

Leslie Jaramillo, a senior who helped make the hand, said she didn’t expect the class project to change another student’s life. “This just showed me a different way to help the community ...

One disruptive student can keep a whole class from learning. ... The guy came toward them with a 16-inch knife in his hand, and they had to make a split-second decision.