In this umthamo we continue to think about some of the science process skills. We will continue to base the work on the natural science strand, Matter and Materials, but this time it will also be linked to the strand Energy and change. In the previous umthamo the focus was on the science skills of observation and predication. This time the skills of inference and developing theories is added. We will be thinking of ways to encourage learners to think about how and why things happen.