Suitable for teaching 11-16s. Science presenter Jon Chase explains photosynthesis.
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Science presenter Jon Chase explains photosynthesis. He shows the balanced symbol equation and conducts an experiment using Cabomba pondweed to demonstrate that oxygen is a product of photosynthesis. He then shows the effect of a lower light intensity on the rate of photosynthesis. Jon also describes the role that plants play in food webs and ecosystems.
This clip is from the BBC series Bitesize Science. Scientist and rapper Jon Chase reveals his top 20 demonstrations and brings school science to life using music, magic tricks and everyday objects such as jelly babies, coins, and cups of very sweet tea.
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For Class Clips users, the original reference for the clip was p011t57f.
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Teaching Biology?
KS3: Recap the equation for photosynthesis. Do this visually by showing students test-tubes of carbon dioxide, water, oxygen and glucose (tests for the first three substances can be reviewed if appropriate). Then review the differences between this process and respiration. Students could repeat Jon’s experiment, counting the numbers of bubbles of oxygen produced by Cabomba or Elodea pondweed at varying intensities of light. Encourage students to prove the gas they have collected is oxygen by using it to relight a glowing splint.
These clips will be relevant for teaching Biology and Science in general at KS3 and KS4 in England, Wales and Northern Ireland and National 4/5 in Scotland. The topics discussed will support OCR, Edexcel, AQA, WJEC GCSE in England and Wales, CCEA GCSE in Northern Ireland and SQA National 4/5 and Higher in Scotland.
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More resources from BBC Bitesize: [ Ссылка ]
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