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Book 2A Unit 7


Unit 7 Living Things and Air

 

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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
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2A



Unit 7



Unit 7
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Unit 7
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Unit 7
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Unit 7
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Content page



Unit 7
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Unit 7
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Corrigenda (April 2021)
Corrigenda (March 2019)
Corrigenda (June 2018)
List of Amendments (April 2019)



Units 2, 3, 5, 7, 9, 12 and 13
Teaching resources for teachers:
  • Teaching plan
  • Worksheets (with suggested answers)
  • Suggested teaching scheme
Worksheets for students



Identifying gases (Related to p.8)  SPS: OB, IF, PA 
More practice for control set-ups (Related to p.22)  SPS: IN 
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Key Steps of Scientific Investigation
Scientific Investigation Training Programme



Science English Basics
Unit 7
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Device that uses sweat to generate electricity(11/2021) COMPUTER SCIENCE   NEW in 2021 
Days of strong humid heat are on the rise(08/2020) ENVIRONMENT 
Governments are fighting large swarms of locusts(08/2020) ENVIRONMENT 
The Australia's bushfires brought huge damages to the wildlife(04/2020) ENVIRONMENT 
Recycling carbon dioxide in air to slow down global warming(04/2020) ENVIRONMENT 



Reusing hard disk and Replacing it with DNA  NEW 
Household project: Make your home 'smart' using IoT and IFTTT  NEW 
Detection in daily life: Using Google Science Journal and ChemEye  NEW 
The COVID-19 has widely spread across the world(06/2020) NEW 
Can plant-based food help solve global warming?(11/2019)
Is sashimi safe to eat?(05/2019)
Building Hong Kong into a world-class smart city(03/2018)
The largest ozone hole over the Arctic ever measured(28-4-2020) NEW 
More frequent fire events in the Amazon rainforest (23-8-2019)
Plastic pollution threatening the lives of the ocean giants (5-2-2018)
Breathable nanofiber face mask (31-1-2018)
World’s first hydrogen-powered train in Germany (12-11-2017)



Travel with Aristo — Japan  NEW in 2021