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: kids understand an idea best when they touch it, then draw it, then write it, the order the U.S. Department of Education recommends for elementary math.
Try it withGravity or Friction Force WorksheetWorksheetsOpen it →




















