The heart is the hardest working organ and now it will work hard in your store. Customers will fall for the great packaging and details. This science kit starts out as a great looking detailed small heart anatomy model. When placed in water over the course of days it demonstrates the super water absorbing properties of polymers as it becomes a big heart. Just place the heart in water and it will grow many times larger. For ages 8 and up Funny gift, if your Grinch's heart is two sizes too small, watch it grow three sizes! Fun science activity for homeschool, back to school, summer. Perfect for birthday gift bags, stocking stuffers, and Easter baskets--or any time you need a little STEM.
