These plastic manipulatives are perfect for helping kids learn about the 7 channels of elimination.  They come with one (1) set of the Fast Facts Cards (created by MMK) to reinforce learning.  One set is perfect for the family or order an additional set of cards for each student. Includes 1.25 to 3.75 inches replicas of the small intestines, large intestines, lungs, brain, heart, kidneys, stomach and liver.