The discussion started with analyzing what is energy, why do we need energy, where do we get energy from, and more on energy. The students replied that we need energy for doing work, running and playing
There are some substances that sink in water and some others that float. The same way some substances are soluble in water and others are not. What is the reason behind this? How do I understand the process? Are all liquids water? If not, what are the differences? What are the activities I can do in the classroom to make my children think on these lines?