Students explore how plants are different from animals in the way they get energy, discovering the remarkable process of photosynthesis.
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Teach: photosynthesis, chlorophyll, carbon dioxide, oxygen, glucose, producer, energy. The word equation is the most important single piece of scientific writing students will learn at this level.
Focus on the inputs and outputs only before introducing chlorophyll and the word equation.
Can students write or state the word equation for photosynthesis? Can they explain where each ingredient comes from and what each product is used for?
A single green leaf and sunlight are the only materials needed. The concept can be fully explored through discussion and diagram alone.
Students often think plants get food from the soil, like animals eating. Soil provides water and minerals but plants produce their own food using light — this is what makes them producers.
Photosynthesis is one of the most important chemical reactions on Earth. It produces virtually all the oxygen in the atmosphere and is the foundation of almost every food chain.
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