Overhead US Coin Set, Set of 45 transparent US Coins for use on the overhead projector. Both heads and tails are included for the penny, nickel, dime, quarter and half-dollar. Grades K-4
Double wall calorimeter with easily removable spring heating element, Operates on 3-6V DC at approximately 5 watts, Inner aluminum 150mL reservoir, aluminum outer, plastic insulator ring, Lid accepts heating element, stirrer, and thermometer cork, 5.1x4.7x7.1 in, 0.7lbs