---Over 440pcs Challenging Kits to Build N Launch into Chain Reaction
---Inspires by STEM Concept through Hands-On Experiment
---Super-sized Chain Reaction Set Includes:
Learning About Potential and Kinetic Energy;
Exploring Cool Mechanical Tricks;
Understanding of Chemistry and Chemical Reaction;
Witnessing Anti-Gravity Stunt;
Exciting Flying Disc Launching into Space;
Multi-Experiments of Different Chain Reactions on Your Own!
---Requires 4 x "AAA" batteries, not included