Predict, test, record
Roll a toy car down a ramp on carpet, then on foil, then on sandpaper. Kids predict, test and record the distance each time. The friction lesson teaches itself, and so does the idea of a fair test.
Why it works: the U.S. Department of Education's guide for teaching elementary math recommends moving from hands-on objects to drawings to numbers.
Try it withGravity or Friction Force WorksheetWorksheetsOpen it →























