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Teaching PowerPoint

The resource marked with means that it has been modified according to the changes in the reprinted with minor amendments.

Teaching PowerPoint

The resource marked with means that it has been modified according to the changes in the reprinted with minor amendments.
Unit 7

7.1 Air

7.2 Photosynthesis

7.3 Respiration

7.4 Gas exchange in plants and animals

7.5 Balance of carbon dioxide and oxygen in Nature

7.6 Air quality

Unit end

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Unit 8

8.1 Introducing electricity and simple circuits

8.2 Circuit diagrams

8.3 Electric current

8.4 Voltage

8.5 Resistance

8.6 Series circuits and parallel circuits

8.7 Our household electricity

8.8 Electrical safety with household electricity

8.9 Power, energy and the cost of electricity

Unit end

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