IGCSE Co-ordinated Sciences
7 videosCambridge IGCSE Co-ordinated Sciences biology, topic by topic: vocabulary with Vietnamese meanings, the concepts, then a quiz. Slow, simple English for students who learn in a second language.
B5 Plant nutrition
5:45B5 Plant nutrition: key vocabulary
Twelve key words for IGCSE Co-ordinated Sciences topic B5, with the Vietnamese meaning, how to say each word, a picture and an example. Ends with a test section, and a typing trainer on the site.
2:30Photosynthesis explained
What photosynthesis is, the word and balanced equations, how chlorophyll changes light energy into chemical energy, and what plants do with the glucose. With Vietnamese subtitles. A “Check yourself” section with typed questions is below the video on the site.
2:38Inside a leaf: structure and function
A cross-section of a dicotyledonous leaf: cuticle, epidermis, palisade and spongy mesophyll, vascular bundle with xylem and phloem, stomata and guard cells, and what each one does. With Vietnamese subtitles. A “Check yourself” section with typed questions is below the video on the site.
2:37Does a plant need chlorophyll, light and CO₂?
How to test a leaf for starch, and the experiments that show chlorophyll, light and carbon dioxide are needed for photosynthesis, with controls. With Vietnamese subtitles. A “Check yourself” section with typed questions is below the video on the site.
2:03The rate of photosynthesis
A pondweed experiment: counting oxygen bubbles to see how light intensity and temperature change the rate of photosynthesis, and what a limiting factor is. With Vietnamese subtitles. A “Check yourself” section with typed questions is below the video on the site.
1:46Nitrate and magnesium: what plants need
Why plants need nitrate ions (for amino acids and proteins) and magnesium ions (for chlorophyll), and what deficiency does to growth. With Vietnamese subtitles. A “Check yourself” section with typed questions is below the video on the site.
5:39B5 quiz: plant nutrition
Ten think-time questions on plant nutrition: photosynthesis, chlorophyll, leaf structure, transport, the starch test, limiting factors and mineral ions. Below the video: written workbook questions with model answers.