Science Class 9
Exploration: Entering the World of Secondary Science
Judge a question, a measurement, a model and a claim like a scientist.
10 lessons · ~61 min total
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Lessons in this topic
- 0 Start here A roadmap: testable questions, units, estimates, models, laws and theories, predictions, and linked branches. · 3 min You are here
- 1 A question worth asking A prediction is a reasoned expectation, and a good test asks about something you can measure. · 6 min
- 2 What a measurement carries A measurement needs a number and a unit, and science shares symbols and standard units. · 7 min
- 3 How close is close enough A rough estimate is often enough to show whether an answer makes sense. · 7 min
- 4 A model is a tool A model keeps the details that matter for one question and leaves out the rest, on purpose. · 7 min
- 5 One idea, many records A law describes a pattern, a theory explains why, and a principle is a broad idea. · 7 min
- 6 The honest report When a prediction fails, scientists re-check their ideas, and tiny differences can grow into big ones. · 7 min
- 7 Three strands, one method Physics, chemistry and biology are not separate boxes, and real problems need several branches together. · 6 min
- 8 The big picture Seven ideas about how scientists think, on one page. · 4 min
- 9 Track quiz A one-screen cheat sheet, then a question on each idea. · 7 min
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