Simple Atwood Machine, include Apparatus and 2 pulleys connected by a rod, 1.75inch plastic pulleys connected to a 3inch rod, Overall length is 8.25inch, Two pulleys are connected by a metal rod.
Specific Heat Demonstration Set, Unique way to illustrate the different heat capacities of various metals features a slanted panel with four grooves to hold metals, Includes four metals cylinders: Aluminum, Copper, Lead and Tin; support stand, two pieces of bee wax
Model Fossil Hominid Tools, Set of 6 includes an Acheulian Banded Flint Hand-Axe; a Mousterian Neanderthal Triangular Bi-facial Hand-Axe; a Mousterian Bi-facial ovate poinT; a Mid-Acheulian Cordiform Bi-facial Hand-Axe; a Mousterian 40,000 year old scraper
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