Cmperipheral Unisex Kids Molecular Structure Model Chemistry Sodium Chloride Crystal Demo Teaching Aids For Junior High School

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Molecular Structure Model Chemistry Sodium Chloride Crystal Demo Teaching Aids for Junior High School.Feature: 1. BIOLOGICAL SCIENCE POPULARIZATION TEACHING AIDS: Chemistry structure model can be used as a teaching tool in biology classroom and as an enlightenment tool in genetics to explore the molecular world and stimulate scientific research interest 2. EASY TO LEARN: The color of each model use a common standard, easier for you to use and learn 3. SIMPLE TO DISASSEMBLE: Atoms and chemical bo