You will learn
- Define rock and mineral.
- Name three rock types.
- Describe mineral properties.
- Sort rocks by observation.
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
- Rocks are made of minerals.
- Minerals have fixed properties.
- Rocks may contain several minerals.
- Crystals have regular shapes.
Words to know
a natural solid with a fixed makeup
a natural mixture of minerals
a mineral with flat shiny faces
how shiny a mineral looks
1. Discover: The shiny granite
Kojo picks up a piece of granite. Through a hand lens he sees pink, white and black grains. “Each colour is a different mineral,” his teacher says. “The rock is a mixture of minerals.” He finds a clear crystal and a shiny flake in the pile as well.
Think: How is a rock different from a mineral?
2. Understand: Rocks
Idea 1: What is a mineral?
A mineral is a natural solid with its own properties, such as quartz or mica. Some form crystals with flat shiny faces.
Idea 2: What is a rock?
A rock is a natural mixture of one or more minerals. Granite has quartz, feldspar and mica. Limestone is mostly calcite.
Idea 3: Telling them apart
We look at colour, lustre (shine), hardness and crystal shape. These properties help scientists identify minerals.
3. Worked examples
Example 1 (I show you): Sort
Granite.
- Many grains.
- Mixture.
- Rock.
Answer: Granite is a rock.
Example 2 (We do it together): Sort
Quartz crystal.
- One substance.
- Crystal.
- Mineral.
Answer: Quartz is a mineral.
Example 3 (You try): Describe
Shiny flake.
Show the steps and answer
- Lustre.
- Glittery.
- Mica.
Answer: It has a shiny lustre.
Did you know?
Table salt is a mineral called halite, and the graphite in pencils is a mineral too.
Why this matters
Minerals and rocks give us metals, building stone, salt and jewels.
4. Explore: Rock detective
Examine five rock samples with a hand lens and record the minerals you can see.
- Observe each rock.
- Note colours and grains.
- Describe lustre and texture.
- Record in a table.
Think about it: what did you notice?
What did you notice? Rocks differed in grains, shine and colour.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- A ___ is a natural solid with fixed properties.
- A ___ is a mixture of minerals.
- A ___ has flat shiny faces.
- ___ is how shiny a mineral looks.
Guided practice
Question 1. What is a mineral?
Natural solid.
Question 2. What is a rock?
Mixture of minerals.
Question 3. Name a mineral.
Quartz.
Independent practice
Level 1: Start
- What is a mineral?
- What is a rock?
- Name a mineral.
- What is lustre?
- What is a crystal?
Level 2: Grow
- Why is granite speckled?
- Why use a lens?
- Why test properties?
Level 3: Stretch
- Describe five rocks.
- Draw a crystal.
- Sort rocks and minerals.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
Describe a rock you know.
Show a sample answer
Use properties.
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 are mixtures.
Fix: Most are ordinary.
8. Lesson summary and revision card
- I can define rock and mineral.
- I can name three rock types.
- I can describe mineral properties.
- I can sort rocks by observation.
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
- Rocks are made of minerals.
- Minerals have fixed properties.
- Rocks may contain several minerals.
- Crystals have regular shapes.
11. Next lesson
Next lesson: Rock properties. 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 rock and mineral. [2 marks]
- Name three properties used to identify minerals. [3 marks]
- Describe a rock sample. [3 marks]
- Safety rules. [2 marks]
Total: 10 marks.
Marking guide and model answers
- Rock [1]; mineral [1]
- 1 each
- Colour [1]; grains [1]; lustre [1]
- 1 each
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 a mineral?
- What is a rock?
- Name a mineral.
- What is lustre?
- What is a crystal?
- Why is granite speckled?
- Why use a lens?
- Why test properties?
- Describe five rocks.
- Draw a crystal.
Homework
Collect five small rocks safely and describe them.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. What is a mineral? | Natural solid. | 1 |
| 2. What is a rock? | Mixture of minerals. | 1 |
| 3. Name a mineral. | Quartz. | 1 |
| 4. What is lustre? | Shine. | 1 |
| 5. What is a crystal? | Flat faces. | 1 |
| 6. Why is granite speckled? | Many minerals. | 1 |
| 7. Why use a lens? | See grains. | 1 |
| 8. Why test properties? | Identify. | 1 |
| 9. Describe five rocks. | Table. | 1 |
| 10. Draw a crystal. | Diagram. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Natural solid.; 2 Mixture of minerals.; 3 Quartz.; 4 Shine.; 5 Flat faces.. Level 2: 1 Many minerals.; 2 See grains.; 3 Identify.. Level 3: 1 Table.; 2 Diagram.; 3 Two lists..
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 Define rock and mineral | 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 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 |
| O3 Describe mineral properties | 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 Sort rocks by observation | 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 are one substance.” They are mixtures.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Explain rocks and minerals.
- 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 rocks and minerals. You do not need to be an expert to help.
- Look at rocks in the garden.
- Ask “What colours?”
- Wash hands after.
- 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: define rock and mineral; name three rock types; describe mineral properties; sort rocks by observation.
Prerequisite knowledge. Grade 3 Earth ideas: types and uses of rocks, soils and how soil forms and moves.
Materials. Rocks, hand lens. 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. Collect samples.
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 granite and ask, “How many colours?”
Explanation (10 min). Teach rocks and minerals.
Guided activity (10 min). Learners examine.
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. Rock or mineral? Which properties?
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 are one substance.” They are mixtures.
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 rocks and minerals. 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 1; 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.