Looking for a fun, easy science experiment for kids? This fruit battery project is a science fair , and a great addition to a classroom lesson plan. Fruit battery kit, diode orange potato lemon generator science experiment. Features - Color: Assorted color. - Material: Zinc copper. - Size: 4.00 x 1.30 x 0.10cm/ 1.57 x 0.51 x 0.04 inch. - You need to prepare several fruits or vegetables, such as apples, oranges, lemons, potatoes, etc. Help to exercise students' practical skills. - Through an interesting fruit battery science experiment, students can explore and understand the mysteries and improve their hands-on ability, so that knowledge is no longer theoretical. - The process of fruit battery science experiment project with kids can create children's imagination, improve observation, increase scientific knowledge, and cultivate scientific invention hobbies. - A wide variety of experimental raws materials can be found . - Learn about electricity in an innovative way, also develop children's hands ability, observation, space cognition. Package list: 2 sets x fruit battery kits