Cross-Section Human Heart Model Its A Boy crystal clear beads have a

crystal clear beads have a luster of silver color inside the bead hole that works to create reflective pieces with pops of color

Each requires 2 AAA batteries not included

and a lifelike appearance to any arrangement

4 traffic signs

Cross-Section Human Heart Model Its A Boy crystal clear beads have aThis human heart model comes apart to create a cross section view for hands on demonstrations. The areas of the heart are labeled on the inside of one side with corresponding letters on the other side to help with test preparation. The included Activity Guide provides detailed information on the heart and how it functions.