Sort and re-sort
Give partners a set of shape cards and have them sort by one rule, like right angles. Then they mix them up and sort by a new rule, like parallel sides. Seeing the same shape land in different groups is what makes categories click.
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 withSort It Organizing Shapes ActivityActivitiesOpen it →













