Plants | Guided Practice
Students will practice applying basic chemistry ideas to plants by connecting photosynthesis, plant nutrients, and chemical inputs/outputs. The lesson uses guided questions, short partner work, and whole-class feedback to help students explain how plants use matter and energy.
| Term | Definition |
|---|---|
| Photosynthesis | The process plants use to convert carbon dioxide and water into glucose and oxygen using light energy. |
| Reactant | A starting substance in a chemical reaction. |
| Product | A substance formed in a chemical reaction. |
| Chlorophyll | The green pigment in plants that absorbs light energy. |
| Nutrient | A substance plants need to grow and carry out life processes. |
| Carbon dioxide | A gas plants take in from the air and use in photosynthesis. |
| Glucose | A sugar made by plants during photosynthesis that stores chemical energy. |
Display a plant and ask: 'What substances does a plant need to survive and grow?' Record student ideas and connect them to chemistry terms.
Think-pair-share and share prior knowledge using simple vocabulary.
Briefly review the photosynthesis equation and label reactants and products. Emphasize that matter is conserved.
Listen, annotate the equation on the handout, and answer quick oral questions.
Lead students through a short set of questions about how plants get carbon dioxide, water, and light energy. Model one answer before students try the next.
Complete the first questions with teacher support, then discuss answers with a partner.
Present a simple scenario: a plant is yellowing despite watering. Ask students to infer possible nutrient issues and connect them to plant chemistry.
Work in pairs to identify possible causes and justify answers using vocabulary words.
Ask 2-3 students to explain one answer each. Correct misconceptions and restate key ideas clearly.
Respond orally and revise notes if needed.
Collect a brief exit ticket with one question: 'Name the reactants of photosynthesis and one nutrient plants need.'
Write a concise response independently.
Summarize that plants are chemical systems that take in carbon dioxide, water, and minerals, then use light energy to make glucose and oxygen. Reinforce the key idea that plant growth depends on both energy and matter.
Formative assessment through oral responses during guided practice and a written exit ticket at the end of class.