You will learn
- Name three rock types.
- Explain how each forms.
- Give an example of each.
- Read a simple rock cycle.
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
- Igneous rocks come from cooled magma or lava.
- Sedimentary rocks form in layers.
- Metamorphic rocks are changed rocks.
- Rocks change over millions of years.
Words to know
rock formed when molten rock cools
rock formed from pressed layers of sediment
rock changed by heat and pressure
molten rock under the ground
1. Discover: The layered cliff
On a school trip, Nana stands below a cliff with stripes of different colours. “Each stripe is a layer of sediment,” the guide explains. “Over millions of years the layers were pressed into rock.” Nearby a dark rock, shiny and glassy, formed from lava that cooled quickly.
Think: How are the two rocks different in origin?
2. Understand: Formation
Idea 1: Igneous
Igneous rocks form when magma or lava cools and hardens, like granite (slowly, under ground) and basalt (quickly, on the surface).
Idea 2: Sedimentary
Sedimentary rocks form when sand, mud and shells settle in layers and are pressed and cemented over millions of years, like sandstone and limestone. They may hold fossils.
Idea 3: Metamorphic
Metamorphic rocks form when heat and pressure change existing rocks, such as limestone into marble or shale into slate.
3. Worked examples
Example 1 (I show you): Classify
Basalt.
- Lava cooled.
- Igneous.
- Fast cooling.
Answer: Basalt is igneous.
Example 2 (We do it together): Classify
Sandstone.
- Layers.
- Pressed.
- Sedimentary.
Answer: Sandstone is sedimentary.
Example 3 (You try): Classify
Marble.
Show the steps and answer
- Heat and pressure.
- Changed limestone.
- Metamorphic.
Answer: Marble is metamorphic.
Did you know?
Most fossils are found in sedimentary rocks, never in igneous rocks, because molten rock would destroy living remains.
Why this matters
Rock types tell us how Earth’s surface has changed.
4. Explore: Model the layers
Model sedimentary layers using sand, flour and soil in a clear tub.
- Add sand to a tub.
- Add soil above it.
- Add flour above that.
- Press down and observe layers.
Think about it: what did you notice?
What did you notice? Layers formed in order with the oldest at the bottom.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- ___ rock forms from cooled magma.
- ___ rock forms from layers.
- ___ rock is changed by heat and pressure.
- ___ is molten rock under the ground.
Guided practice
Question 1. What is igneous?
Cooled magma.
Question 2. What is sedimentary?
Layers.
Question 3. What is metamorphic?
Changed.
Independent practice
Level 1: Start
- What is igneous?
- What is sedimentary?
- What is metamorphic?
- What is magma?
- Name an example.
Level 2: Grow
- Why fossils in sedimentary?
- Why layers?
- Why heat and pressure?
Level 3: Stretch
- Sort rocks.
- Draw the rock cycle.
- Model layers.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
Explain how marble forms.
Show a sample answer
Use limestone.
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 change slowly.
Fix: In sedimentary.
8. Lesson summary and revision card
- I can name three rock types.
- I can explain how each forms.
- I can give an example of each.
- I can read a simple rock cycle.
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
- Igneous rocks come from cooled magma or lava.
- Sedimentary rocks form in layers.
- Metamorphic rocks are changed rocks.
- Rocks change over millions of years.
11. Next lesson
Next lesson: Weathering. 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.
- Name and define three rock types. [3 marks]
- Describe how sedimentary rock forms. [3 marks]
- Give one example of each type. [3 marks]
- Safety rule? [1 mark]
Total: 10 marks.
Marking guide and model answers
- 1 each
- Sediment settles [1]; pressed [1]; millions of years [1]
- 1 each
- 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
- What is igneous?
- What is sedimentary?
- What is metamorphic?
- What is magma?
- Name an example.
- Why fossils in sedimentary?
- Why layers?
- Why heat and pressure?
- Sort rocks.
- Draw the rock cycle.
Homework
Find a layered stone or soil bank and sketch the layers.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. What is igneous? | Cooled magma. | 1 |
| 2. What is sedimentary? | Layers. | 1 |
| 3. What is metamorphic? | Changed. | 1 |
| 4. What is magma? | Molten rock. | 1 |
| 5. Name an example. | Marble. | 1 |
| 6. Why fossils in sedimentary? | Gentle burial. | 1 |
| 7. Why layers? | Settling. | 1 |
| 8. Why heat and pressure? | Change rock. | 1 |
| 9. Sort rocks. | Table. | 1 |
| 10. Draw the rock cycle. | Diagram. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Cooled magma.; 2 Layers.; 3 Changed.; 4 Molten rock.; 5 Marble.. Level 2: 1 Gentle burial.; 2 Settling.; 3 Change rock.. Level 3: 1 Table.; 2 Diagram.; 3 Model..
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 Name three rock types | 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 Explain how each forms | 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 Give an example of each | 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 Read a simple rock cycle | 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: “Rocks never change.” They change slowly.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Explain how rock types form.
- 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 how rocks form. You do not need to be an expert to help.
- Look at wall stones.
- Ask “How did it form?”
- Wash hands.
- 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: name three rock types; explain how each forms; give an example of each; read a simple rock cycle.
Prerequisite knowledge. Grade 3 Earth ideas: types and uses of rocks, soils and how soil forms and moves.
Materials. Clear tub, soil, sand. 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 materials.
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 layered rock and ask, “How did it form?”
Explanation (10 min). Teach formation.
Guided activity (10 min). Learners model.
Independent activity (10 min). Learners classify.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. Igneous, sedimentary or metamorphic?
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. “Rocks never change.” They change slowly.
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. Explain how rock types form. 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 7, topic 3; Next Generation Science Standards, Earth’s systems; Cambridge Primary Science Stage 4, Earth and space: rocks and soils; IB Primary Years Programme, sharing the planet. These sources informed the lesson.