Batteries (science experiments on batteries)

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This lesson explores the structure and working principles of batteries through experiments. The students are engaged to learn once they realize the importance of batteries in daily life. Students will understand the structure and working principles of batteries through this lesson and perhaps will want to develop better batteries in the future! Prior to using this lesson, a teacher may want to ask students to obtain some knowledge about batteries on their own.There are several experiments for the students to conduct in this lesson. Some fruits such as lemons, tomatoes, apples will be used for the experiments. Other materials such as wires, a galvanometer, and a small bulb also need to be prepared. The experiments take some time. To save time, the students can be divided into several groups with 3-5 students doing different experiments. Afterwards, the different groups can share and discuss their findings. By conducting the experiements this way, the lesson can be done in about 45 minutes. Students should be encouraged to perform the experiments in a focussed and ordered manner. For example, while exploring the conditions to form a primary cell, they should always keep one condition the same and change other conditions alternately.