Email notifications are only sent once a day, and only if there are new matching items. Jose Medrano and Rebeca Zapata shuddered at what their daughter, Miranda Zapata, brought home one recent day: ...

Students haven't lost the ability to work through confusion, but they've developed an automatic reflex to avoid it. Remove the escape hatch, and the ability returns within minutes.

Learning math takes effort and can even feel uncomfortable, but moments of struggle and mistakes are part of the process. Research shows that productive struggle in math leads to better learning. But ...