An activity that can be done as a class experiment. Just make sure materials and equipment are available for the students. If not readily accessible in your school, ask groups to bring in materials.
This activity can be used when discussing about the importance of water. As a springboard of the topic, prepare pictures or powerpoint slides on water pollution, water scarcity in different parts of the world, sources of water, and etc. When it rains, water penetrates into the ground and as it passes through it, the water is filtered by the rocks, and sand, and soil, and eventually comes out as clean water at a spring or wells. (more…)