Description: You can understand the basic principles through basic electricity and magnetism experiments in full-color manuals, which can help children learn, think and explore.There are 17 chapters with fun projects, such as fruit battery, electric bell making and hand generator, etc. The basic electricity and magnetism experiments kit includes everything that you need to get started, which provides a hands-on opportunity for students to build simple electrical and magnetic models. It is made of plastic and electronic components materials. The compass diameter is 4.2cm, fan size is 5.4cm and cable length is 26cm. It can operate 17 experiments, such as circuit series and parallel, oersted experiment, electromagnet experiment, the interaction law of magnetic poles, explore the working current of the diode,manual power generation, conversion of mechanical energy into kinetic energy. Item Name: Physics Experiment Kits Material:Plastic,Electronic Component Size Details: Circuit Size: 19.2cm x 6.2cm/7.56" x 2.44" (Approx.) Compass Diameter: 4.2cm/1.65" (Approx.) Fan Size: 5.4cm/2.13" (Approx.) Cable Length: 26cm/10.24" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 Set of Physics Experiment Kits