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3. ročník
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Our changing environment
- The properties of matter 38
- States of matter 40
- Changing states of matter I. 42
- Changing states of matter II. 44
- Dissolution 46
- Observation of the weather 48
- Continuos observation of the weather 50
- The weather 52
- Wind and precipitation 54
- Lighting a fire 56
- The two faces of fire 58
- Recap 60
- Glossary 63
