ScienceHow to use these pages
Each topic takes about ten minutes to read. Read the explanation, note the key terms, try the activity and then answer the quick questions without looking. Tap "Mark this topic as learnt" when you can answer them all; a tick then appears beside the topic in these lists, in your browser.
The class range is a typical guide. Your board or school may teach a topic a year earlier or later, so look for the topic by name. For examinations, read the same chapter in your prescribed textbook. How to study science has a simple plan.