Explore measurement with this set of 12 durable foam feet. Feet feature 1″ increments, plus 1/4″, 1/2″, 3/4″ and 1′ markings on one side. Reverse side is blank for estimation activities. Arrange feet in a heel-toe-line to measure distance. Or, hold up an object to the unmarked side and approximate its length, then check their estimate on the marked side. Includes Activity Guide and 6 pairs of feet in 6 colors—red, orange, yellow, green, blue, and purple. Feet measure approximately 12″L x 5″W x 1/3″D.