Experiments can be used to introduce new ideas or clarify puzzling topics with which students typically struggle. If the result of an experiment is surprising yet convincing, students are in a position to build ownership of the new idea and use it to scaffold learning. Grade VII students engaged themselves in experimenting with respiration in plants and animals using a yardstick kit. They performed a lime water test to show that carbon dioxide gas is given out during respiration. This activity helped to strengthen the theoretical concepts of respiration in plants and animals. ""
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