The basic electricity and magnetism experiments includes everything that you need to provides a hands-on opportunity for students in grades 7-11 to build simple electrical and models. Series Circuits, Parallel Circuits, Fruit Battery, Measure unknown resistor with Ohm's law, Oersted Experiment, Electromagnet, Amper's Force Investigation, Electric Making and Hand Crank Generator. Color: As Shown Material: Plastic+Metal Package Contents: 1 set of Physics Science Lab Basic Circuit Learning Starter Kit 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.