The best simple and fun tech value pack for beginners - create, connect and experimental electrical and magnetic circuitry inventions. This electromagnetism, physics and math learner puzzle is simple to use and the perfect hands-on course to teach thinking, engineering skills and creativity outside of a classroom or school. Loved by teachers, parents and diy enthusiasts, and used as a development tool by educators in classes, summer camps and schools around the world. customers need to assemble by themselves Type: Circuit Experiment Kits Powered by: 2 x AA Batteries (Not include) Applications: Physics Circuit Learning Experiment Circuit Experiment Kits, Physics Labs Learning, Science Study, Principles, Experiment Equipment Note: The color of the accessories is random and not specified. Please read carefully before purchasing. It contains small accessories and objects, and children should be accompanied by adults to complete it. Please of children and avoid swallowing. Colour:Yellow Material:plastic Package Contents: 1 Set x Circuit Experiment Kits Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.