W9: PTE Spelling Practice

In science, we sometimes simple investigations to what might happen when materials change. For example, we might a reaction by mixing different substances on a special in the lab. We must think carefully about how to safely of any materials we use and not anything dangerous.

Sometimes experiments do not work at first, but we learn to challenges and try again. We might our results in a report to share with others and explain the of what we have learned. As we test our ideas, we often discover than we expected.