These zinc and copper sheets can be widely applied for studying, teaching, learning, presentation and so on. Practical tools to learn how to use fruits and to generate electricity. Intuitive experiment with these interesting materials, can arouse the interest of the physics and chemistry, fit your demands. Features -Color:Golden, silver -Material:Zinc, copper - Size: 4.00X1.10X0.10cm/1.57X0.43X0.04in -These sheet are suitable for building DIY fruit batteries and teaching, learning, and presentations. -The zinc and copper sheet are good tools for motivating you to learn about physics and chemistry in a simpler and better way. -Parents can conduct fruit battery experiments with their little ones to arouse their interest in science learning. -Easy to use, these copper and zinc sheet can improve practical skills, and stimulate interest in learning. -Using sturdy materials and crafted with precision, these zinc sheet, copper sheet are not easy to deform or break. Package list: 30 x Experiment Copper Sheets 30 x Zinc Sheets