You will learn
- Describe Earth’s shape and layers.
- Name Earth’s main features.
- Explain why Earth supports life.
- Compare Earth with another planet.
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
- Earth is a sphere.
- About 70 percent of its surface is ocean.
- The atmosphere protects and supplies air.
- Earth orbits the Sun once a year.
Words to know
a large body that orbits a star
the layer of gases around Earth
the path around another object
a ball shape
1. Discover: The globe
Selorm spins a globe in class. “Most of it is blue,” she says. “That is the ocean.” Her teacher explains that Earth is a ball with a thin layer of gases, the atmosphere, that gives us air and keeps us warm. “Earth is just the right distance from the Sun for life.”
Think: Why is most of the globe blue?
2. Understand: Earth
Idea 1: Shape and surface
Earth is a planet shaped like a sphere that is slightly wider at the equator. About 70 percent of the surface is ocean and 30 percent is land.
Idea 2: Atmosphere
The atmosphere is a layer of gases that gives us air to breathe, traps heat and blocks harmful rays. It thins out towards space.
Idea 3: A place for life
Earth orbits the Sun at a distance where water can be liquid, so life can exist. Earth is the only planet known to have life.
3. Worked examples
Example 1 (I show you): Describe
Shape.
- Ball.
- Sphere.
- Wider at equator.
Answer: Earth is a sphere.
Example 2 (We do it together): Describe
Surface.
- 70 percent ocean.
- 30 percent land.
- Blue.
Answer: Mostly ocean.
Example 3 (You try): Explain
Atmosphere.
Show the steps and answer
- Air.
- Keeps warm.
- Protects.
Answer: Atmosphere gives air and warmth.
Did you know?
If Earth were the size of a basketball, the atmosphere would be thinner than a sheet of paper.
Why this matters
Knowing about Earth shows why it is special and worth protecting.
4. Explore: Globe survey
Use a globe or map to find oceans, continents and the equator.
- Spin the globe.
- Name the oceans.
- Find your country.
- Estimate land vs water.
Think about it: what did you notice?
What did you notice? Water covers most of Earth.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- A ___ orbits a star.
- The ___ is the layer of gases around Earth.
- An ___ is a path around an object.
- A ___ is a ball shape.
Guided practice
Question 1. What is Earth’s shape?
Sphere.
Question 2. How much is ocean?
About 70 percent.
Question 3. What is the atmosphere?
Gas layer.
Independent practice
Level 1: Start
- What is Earth’s shape?
- How much is ocean?
- What is the atmosphere?
- What does Earth orbit?
- Only planet with life?
Level 2: Grow
- Why liquid water?
- Why atmosphere?
- Why a sphere?
Level 3: Stretch
- Label a globe.
- Compare two planets.
- Explain life on Earth.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
Explain why Earth supports life.
Show a sample answer
Three reasons.
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: Sphere.
Fix: Atmosphere thins out.
8. Lesson summary and revision card
- I can describe Earth’s shape and layers.
- I can name Earth’s main features.
- I can explain why Earth supports life.
- I can compare Earth with another planet.
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
- Earth is a sphere.
- About 70 percent of its surface is ocean.
- The atmosphere protects and supplies air.
- Earth orbits the Sun once a year.
11. Next lesson
Next lesson: The Sun. 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.
- Define planet and atmosphere. [2 marks]
- Describe Earth’s surface. [3 marks]
- Explain why Earth supports life. [3 marks]
- Safety rule. [2 marks]
Total: 10 marks.
Marking guide and model answers
- Planet [1]; atmosphere [1]
- Sphere [1]; 70 percent ocean [1]; 30 percent land [1]
- Water [1]; air [1]; distance [1]
- Any [1]; reason [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
- What is Earth’s shape?
- How much is ocean?
- What is the atmosphere?
- What does Earth orbit?
- Only planet with life?
- Why liquid water?
- Why atmosphere?
- Why a sphere?
- Label a globe.
- Compare two planets.
Homework
Draw Earth and label the ocean, land and atmosphere.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. What is Earth’s shape? | Sphere. | 1 |
| 2. How much is ocean? | About 70 percent. | 1 |
| 3. What is the atmosphere? | Gas layer. | 1 |
| 4. What does Earth orbit? | Sun. | 1 |
| 5. Only planet with life? | Earth. | 1 |
| 6. Why liquid water? | Right distance. | 1 |
| 7. Why atmosphere? | Air and warmth. | 1 |
| 8. Why a sphere? | Gravity. | 1 |
| 9. Label a globe. | Diagram. | 1 |
| 10. Compare two planets. | Table. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Sphere.; 2 About 70 percent.; 3 Gas layer.; 4 Sun.; 5 Earth.. Level 2: 1 Right distance.; 2 Air and warmth.; 3 Gravity.. Level 3: 1 Diagram.; 2 Table.; 3 Sentence..
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 Describe Earth’s shape and layers | 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 Name Earth’s main features | 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 Explain why Earth supports life | 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 Compare Earth with another planet | 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: “Earth is flat.” Sphere.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Describe Earth as a planet.
- 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 learns about Earth as a planet. You do not need to be an expert to help.
- Look at a globe together.
- Ask “Where is our country?”
- Never look at the Sun.
- 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: describe Earth’s shape and layers; name Earth’s main features; explain why Earth supports life; compare Earth with another planet.
Prerequisite knowledge. Grade 3 Earth ideas: weather patterns, seasons and shadows.
Materials. Globe, paper, pencils. 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. Set out globes.
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). Spin a globe and ask, “What do you see?”
Explanation (10 min). Teach Earth.
Guided activity (10 min). Learners explore.
Independent activity (10 min). Learners label.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. What shape? What covers it? Why life?
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. “Earth is flat.” Sphere.
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. Describe Earth as a planet. 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 4 Unit 8, topic 1; Next Generation Science Standards, Earth’s place in the universe; Cambridge Primary Science Stage 4, Earth and space; IB Primary Years Programme, where we are in place and time. These sources informed the lesson.