Grade 8 Natural Sciences & Technology — CAPS Lesson Plans, Worksheets & 2026 ATP

1. 60-Minute CAPS Lesson Plan

Source: WCED 2023/24 Grade 6 Natural Sciences & Technology ATP (Page 2 of 5 (Term 1, Weeks 1–2) · Grade 8 (Senior Phase))

• 10 min Phase 1: Prior knowledge hook & sensory comparison (Hook & Prior Knowledge)
  Activate Grade 4/5 prior knowledge: Ask learners why green plants are called 'producers' at the start of every food chain. Display two white powders in labelled dishes: glucose powder and maize starch. Ask learners to observe texture and solubility in water.
• 20 min Phase 2: Core instruction: The leaf factory & gas exchange ("I Do" Explicit Modelling)
  Draw the cross-section of a green leaf on the board showing sunlight entering the upper surface, water travelling up from roots via stem veins, and carbon dioxide entering through tiny pores. Explain how plants convert soluble glucose into insoluble starch and store it in roots (carrots, sweet potatoes), stems (sugar cane, potato tubers), leaves (spinach, cabbage), fruits (apples), and seeds (maize, wheat, rice). Highlight Plants and Air: Plants absorb carbon dioxide and release oxygen during photosynthesis, maintaining the balance of gases in Earth's atmosphere.
• 20 min Phase 3: Practical Investigation: Testing foods for starch with iodine ("We Do" Guided & Pair Work)
  Divide learners into groups of 4 with spotting trays containing small samples of cooked rice, bread, raw potato, maize flour, cooking oil, boiled egg white, and cheese. Demonstrate safety with iodine solution (yellow-brown indicator that turns blue-black in the presence of starch). Learners predict which foods contain starch, add 2 drops of iodine solution to each sample, and record colour changes in a structured results table.
• 10 min Phase 4: Independent Exercise Application ("You Do" Worksheet Practice)
  Learners complete the levelled 20-mark CAPS exercises on "Photosynthesis". Teacher circulates with the scoring rubric to check Method [M] and Accuracy [A] steps in real time.
• 10 min Phase 5: Consolidation & informal assessment check (Exit Ticket & Family Bridge)
  Groups compare predictions with observed results: plant storage foods (bread, rice, potato, maize) turn blue-black; animal/fat foods (egg, cheese, oil) remain yellow-brown. Learners complete the labelled photosynthesis flow diagram in their workbooks.

2. 20-Mark Cognitive Worksheet & Memo

Cognitive Weighting: Aligned to CAPS Barrett / Bloom Taxonomy

• Question 1.1 · Level 1 · Knowing science (Low · 25%) [2 Marks]
  Name the green pigment in leaves that traps sunlight energy and state where photosynthesis mainly takes place.
  Memo: Chlorophyll (1) inside the green leaves of the plant (1).
• Question 1.2 · Level 1 · Knowing science (Low · 25%) [3 Marks]
  List the three raw requirements a green plant needs from its environment to carry out photosynthesis.
  Memo: Sunlight / light energy from the Sun (1), carbon dioxide from the air (1), and water from the soil (1).
• Question 2.1 · Level 2 · Understanding & applying (Middle · 45%) [4 Marks]
  Explain why plants change glucose sugar into starch, and name two different plant parts where starch is stored with one food example of each.
  Memo: Glucose is soluble in water so plants convert it into insoluble starch for safe long-term storage (2). Stored in roots/tubers e.g. potato/carrot (1) and seeds/grains e.g. maize/rice/wheat (1).
• Question 2.2 · Level 2 · Understanding & applying (Middle · 45%) [5 Marks]
  A learner drops yellow-brown iodine solution onto cooked rice, potato, boiled egg, and cheese. Predict the colour change for each food and explain the reason for the difference.
  Memo: Cooked rice and potato turn blue-black (2); boiled egg and cheese stay yellow-brown (2). Rice and potato come from plants that store starch, whereas egg and cheese come from animals which do not store starch (1).
• Question 3.1 · Level 3 · Analysing & evaluating (High · 20%) [4 Marks]
  Analyse what would happen to the levels of carbon dioxide and oxygen in the atmosphere if large forests were cut down and cleared.
  Memo: Carbon dioxide levels would increase because fewer trees absorb CO2 during photosynthesis (2), and oxygen released into the atmosphere would decrease, harming living organisms that need oxygen to breathe (2).
• Question 4.1 · Level 4 · Synthesising & designing (High · 10%) [2 Marks]
  Formulate a testable hypothesis for an experiment investigating whether light is required for a green plant to produce starch.
  Memo: If a green leaf is covered with foil so it receives no sunlight, then it will not produce starch and iodine solution will remain yellow-brown (2).

3. Sunday WhatsApp Family Guide & Resources

In Weeks 1–2 of Term 1, your child is learning how green plants manufacture their own food (glucose sugar) using sunlight, water, and carbon dioxide, and how plants store extra food as starch while releasing oxygen into the air.

Dinner-Table Coaching Prompts:

• Which foods on our dinner plate tonight came from plants storing starch in their roots, stems, or seeds?
• Why do you think plants and humans depend on each other for the air we breathe?

Required Classroom Resources: Glucose powder, maize flour (corn starch), iodine solution, plastic droppers · Examples of foods to test for starch: cooked rice, flour, potato, bread, cooking oil, boiled egg, cheese · Video clips and posters showing photosynthesis in a green leaf