/learn/s27/t15167 /learn/node/55664 In this episode, learners explore where water comes from. They trace the water source from the tap to underground pipes, storage facilities, rivers and streams and finally to the rain that fills these. Learners discover that water can run off or infiltrate the ground. They also lear that there are ways to prevent water from running off. Finally, learners lear how water is treated to make it safe for human and animal consumption. /learn/node/55665 In this episode, learners discover where water goes to when it falls as rain.They discover that water is absorbed into soil and certain types of rocks.Learners also dicover that water can be wasted when it runs off and this can be avoided by planting grass and other plants. Learners also see how to test for the presence of water in soil /learn/node/55666 In this episodes, learners discover a few things about air. They discover that : We need air to breathe, air has properties that can be identified, air can be collected, air can move and it can move objects.The learners learn that when air is compressed into small space in a plastic bag or balloon, the balloon become hard and that air can be moved by blowing for example /learn/node/55667 In this episode, learners dicover that we need clean air and water for good health.They also learn how the lungs function. In addition, they dicover that clean water is not necessarily safe to drink The episode describes the kinds of harmful bacteria and pollutants that can infect us through dirty air and water. /learn/node/55667 In this episode, learners dicover that we need clean air and water for good health.They also learn how the lungs function. In addition, they dicover that clean water is not necessarily safe to drink The episode describes the kinds of harmful bacteria and pollutants that can infect us through dirty air and water. /learn/node/55668 In this episode, learners look at different ways of keeping water clean. They learn how to make a water-filter. The episode also focuses on personal responsibility for ensuring that clean air and water /learn/node/55668 In this episode, learners look at different ways of keeping water clean. They learn how to make a water-filter. The episode also focuses on personal responsibility for ensuring that clean air and water /learn/node/55669 This episode deals with safety around water..Learners explore potentially dangerous situations such as swimming pools, dams and stormwater drains.They learn what to do in an emergency situation and about safe behaviour around water, and about safe investigative practices for science investigations around water