You will learn
- List what plants need to grow.
- Predict what happens without a need.
- Carry out a fair test.
- Record and explain results.
Version 0.2 · expanded edition · built from cited public sources Content is based on the official frameworks and sources listed under Sources and standards. No official endorsement is claimed. Written in the style of common primary school assessments. No exam result is promised.
Student lesson
- Plants need light, water, air, warmth and nutrients.
- Missing one need slows growth.
- A fair test changes one variable.
- We record results carefully.
Words to know
minerals plants take from soil
to start to grow from a seed
something that can change
a test where nothing is changed
1. Discover: The windowsill test
Ama grows three bean plants. One stays by the window with water. One is in a dark cupboard with water. One is by the window with no water. After a week the first is tall and green, the second is pale, and the third is wilted. “The plants need both light and water,” she says.
Think: Why did she keep one plant normal?
2. Understand: Growth needs
Idea 1: Needs
Plants need light, water, air, warmth and nutrients from soil to grow well.
Idea 2: Missing needs
Without light, leaves turn pale. Without water, plants wilt. Without warmth, seeds may not germinate.
Idea 3: Fair test
To test one need, change only one variable and keep the rest the same. Keep a control plant with everything it needs.
3. Worked examples
Example 1 (I show you): Need
No light.
- Leaves pale.
- Weak growth.
- Need light.
Answer: Plants need light.
Example 2 (We do it together): Need
No water.
- Wilts.
- Dry.
- Need water.
Answer: Plants need water.
Example 3 (You try): Test
Change one thing.
Show the steps and answer
- Control plant.
- One variable.
- Fair.
Answer: Change one thing at a time.
Did you know?
Plants grown in space stations need special lights because there is no Sun inside.
Why this matters
Knowing plant needs helps farmers and gardeners.
4. Explore: Plant needs test
Test whether bean seedlings need light.
- Plant three beans in damp soil.
- Put one in light, one in dark.
- Keep one as a control.
- Record a week of growth.
Think about it: what did you notice?
What did you notice? The dark plant was pale and weak.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- Plants need ___.
- Without water plants ___.
- A fair test changes ___ thing.
- A ___ plant has everything.
Guided practice
Question 1. Name three plant needs.
Light, water, air.
Question 2. What do nutrients come from?
Soil.
Question 3. What does no water cause?
Wilting.
Independent practice
Level 1: Start
- Name three plant needs.
- What do nutrients come from?
- What does no water cause?
- What does no light cause?
- What is a control?
Level 2: Grow
- Why keep a control?
- Why change one thing?
- Why record?
Level 3: Stretch
- Plan a fair test.
- Record results.
- Explain results.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
What does your garden plant need?
Show a sample answer
Light and water.
Another one. Tell a family member one thing from this lesson. Use the words you learned.
Show a sample answer
A clear sentence that uses at least one word from Words to know.
7. Common mistakes
Fix: They take water and nutrients.
Fix: Too much can harm.
8. Lesson summary and revision card
- I can list what plants need to grow.
- I can predict what happens without a need.
- I can carry out a fair test.
- I can record and explain results.
9. Check and master
Answer all 14 questions. You will see feedback after each one.
Your result appears here after you answer every question.
10. Key takeaways
- Plants need light, water, air, warmth and nutrients.
- Missing one need slows growth.
- A fair test changes one variable.
- We record results carefully.
11. Next lesson
Next lesson: Plant adaptations. Keep going with the next idea in this course.
Exam practice
These questions are written in the style of common school and international primary assessments. Try them on your own, without looking back. Then check your answers in the marking guide. The marks are shown in brackets.
- List three plant needs. [3 marks]
- Explain a fair test. [3 marks]
- What happens without light? [2 marks]
- Why record? [1 mark]
- Safety rule? [1 mark]
Total: 10 marks.
Marking guide and model answers
- Any three [1 each]
- One variable [1]; control [1]; record [1]
- Pale [1]; weak [1]
- Evidence [1]
- Any [1]
Score guide: 9 to 10 = secure. 6 to 8 = nearly there, revise the parts you missed. Under 6 = work through the lesson again with a grown-up.
Printable worksheet
- Name three plant needs.
- What do nutrients come from?
- What does no water cause?
- What does no light cause?
- What is a control?
- Why keep a control?
- Why change one thing?
- Why record?
- Plan a fair test.
- Record results.
Homework
Set up your own plant test at home with an adult and record for one week.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. Name three plant needs. | Light, water, air. | 1 |
| 2. What do nutrients come from? | Soil. | 1 |
| 3. What does no water cause? | Wilting. | 1 |
| 4. What does no light cause? | Pale leaves. | 1 |
| 5. What is a control? | Normal plant. | 1 |
| 6. Why keep a control? | Compare. | 1 |
| 7. Why change one thing? | Fair test. | 1 |
| 8. Why record? | Evidence. | 1 |
| 9. Plan a fair test. | Plan. | 1 |
| 10. Record results. | Table. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Light, water, air.; 2 Soil.; 3 Wilting.; 4 Pale leaves.; 5 Normal plant.. Level 2: 1 Compare.; 2 Fair test.; 3 Evidence.. Level 3: 1 Plan.; 2 Table.; 3 Paragraph..
Quiz answers: 1 B, 2 C, 3 A, 4 B, 5 C, 6 A, 7 B, 8 C, 9 A, 10 B, 11 C, 12 A, Challenge 1 B, Challenge 2 C.
Mastery and remediation
| Objective | Bronze (Developing) | Silver (Proficient) | Gold (Advanced) |
|---|---|---|---|
| O1 List what plants need to grow | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O2 Predict what happens without a need | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O3 Carry out a fair test | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O4 Record and explain results | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
Courseversity badge thresholds (overall quiz score): Gold = 90–100%; Silver = 80–89.9%; Bronze = 70–79.9%. A badge is never a full record of progress.
If a learner struggles
- Find the misconception: “Plants eat soil.” They take water and nutrients.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Plan and explain a fair test about plant needs.
- Guided practice: work through one example together and let the learner try the next one.
- Reassess: use the quiz again or the worksheet.
- Move on when the learner shows Silver-level evidence independently.
For parents and guardians
In this lesson your child tests what plants need. You do not need to be an expert to help.
- Care for a plant together.
- Ask, “What does it need?”
- Wash hands after soil.
- Ask “how do you know?” after each answer, and listen.
- Praise effort, not only right answers. Mistakes are how we learn.
- Ten to fifteen minutes a day is better than one long session.
Teacher package
1–5. Objectives, prerequisites, materials, preparation, duration
Lesson objectives. Learners will: list what plants need to grow; predict what happens without a need; carry out a fair test; record and explain results.
Prerequisite knowledge. Grade 2 plant ideas: the parts of a plant, what seeds need to grow, and the plant life cycle.
Materials. Bean seeds, cups, soil, water, a dark cupboard. Low-resource options: use chalk or charcoal on a board or wall, drawings in the sand, and objects from the classroom instead of printed materials.
Preparation. Prepare cups and soil.
Suggested duration. 45–60 minutes. It can be split into two shorter sessions.
6–9. Teaching procedure, explanation notes, guided and independent activities
Introduction (5 min). Show a pale plant and ask, “What went wrong?”
Explanation (10 min). Teach needs.
Guided activity (10 min). Learners plan tests.
Independent activity (10 min). Learners record.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. What do plants need? What did you change?
Teacher explanation notes. Start with real objects and safe, hands-on observation. Then talk about what was seen, then draw and write. Always say “how do you know?”. Keep to the safety notes, and use local, safe materials.
10–12. Differentiation, formative assessment, common misconceptions
Support. Use real objects and pictures, short sentences and a partner. Let learners point, show or draw instead of writing. Extension. Ask learners to find a new example at home and explain how they know.
Formative assessment. Listen to learners read and explain, ask “how do you know?”, and check the independent work.
Misconceptions. “Plants eat soil.” They take water and nutrients.
13–15. Assessment questions, answer keys, marking scheme
Use the quiz, the 10-mark exam practice and the worksheet on this page. All answers and marking guides are in the answer sections above. Re-check every answer before use.
16–19. Remediation, enrichment, homework, teacher reflection
Remediation. Plan and explain a fair test about plant needs. Enrichment. Look for one new example near your home or school, draw it and explain it to someone. Homework. See above.
Teacher reflection. After teaching, record: which ideas learners understood; which misconceptions occurred; which activities worked; which learners need more practice; and what to improve next time.
Sources and standards
This lesson is based on the sources below, and no official endorsement is claimed. Reference starting points: Next Generation Science Standards, Cambridge Primary Science and the IB Primary Years Programme. Where a standard code is named, it points to the official framework.
Research used to shape this lesson. Courseversity Science curriculum, Grade 3 Unit 2, topic 9; Next Generation Science Standards, structure and function and life cycles of plants; Cambridge Primary Science Stage 3, plants and humans; IB Primary Years Programme, how the world works. These sources informed the lesson.