Homeschool Guide: These lesson plans are a guide for parents. Content may contain errors — always cross-reference with official exam board specifications.

metamorphic rocks

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4 detailed 50-minute lessons with teaching scripts, worked examples, parent guides, and assessment criteria.

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Lesson Overview

Total Lessons: 4
Tier: Foundation and Higher
Duration: 50 minutes per lesson (200 minutes total)
Exam Boards: AQA, Edexcel, OCR, Eduqas, CCEA

Learning Objectives

Prerequisites

Materials & Equipment

Lesson 1: Introduction: metamorphic rocks

Duration: 50 minutes

Starter Activity (5 minutes)

Quick Recall

Write down everything you already know about metamorphic rocks. Then check against the key terms: key terms from metamorphic rocks. Use a mini-whiteboard or paper.

Main Content (35 minutes)

Parent/Teacher Guide:
Before lesson: Read the script below. Pre-teach key vocab: key terms from metamorphic rocks.
If stuck: Re-read the revision notes (link above), then break the content into smaller steps.
Extension: See the Stretch & Challenge ideas in Lesson 4.
Teaching Script (35 mins):
Mins 0-5 - Hook: "Today: metamorphic rocks. By the end you will be able to answer exam questions on it unaided. It connects to the rest of Geology because the ideas here recur across the spec."
Mins 5-20 - Direct Instruction: Work through the core ideas below one at a time; after each, ask your student to explain it back in their own words.
Mins 20-30 - Guided Practice: Model the worked example together, then let your student attempt the first practice question with guidance.
Mins 30-35 - Independent Practice: 2-3 practice questions from Lesson 3 below, with immediate feedback.
First Look

Start with the revision notes summary, then attempt: explain the key ideas of metamorphic rocks

Plenary (5 minutes)

Check Out

Your student states one thing they learned and one question they still have about metamorphic rocks.

Lesson 2: Core Concepts: metamorphic rocks

Duration: 50 minutes

Starter Activity (5 minutes)

Review Previous Lesson

Quick recap: write 3 key points from Lesson 1 on metamorphic rocks. Check them against the notes below.

Main Content (35 minutes)

Key Fact: Metamorphic rocks form when existing rocks are changed by heat and/or pressure without melting
Key Fact: Regional metamorphism: large-scale, caused by tectonic compression and heat during mountain building; produces foliated rocks
Key Fact: Contact metamorphism: local, caused by heat from an igneous intrusion; produces non-foliated rocks
Key Fact: Foliation: alignment of minerals in bands, produced by directed pressure (e.g. slate to schist to gneiss with increasing grade)
Key Fact: Index minerals indicate metamorphic grade: chlorite (low), biotite, garnet, staurolite, kyanite, sillimanite (high)
Key Fact: Common metamorphic rocks: slate (from mudstone), schist (from shale), gneiss (from granite), marble (from limestone), quartzite (from sandstone)

Practice (10 minutes)

Q: explain the key ideas of metamorphic rocks

Answer:

Plenary (5 minutes)

Explain Back

Your student teaches the key points back to you without looking. Fill any gaps immediately.

Lesson 3: Application: metamorphic rocks

Duration: 50 minutes

Starter Activity (5 minutes)

Quick Recall

Recall the key terms: key terms from metamorphic rocks. Define each in one sentence.

Main Content (35 minutes)

Parent/Teacher Guide: Let your student attempt each question alone first, then compare with the model answer. Award method marks for correct working even if the final answer is wrong.

Work through the practice questions on the revision notes page for this topic.

Plenary (5 minutes)

Error Review

Review any questions answered incorrectly. Identify whether the error was knowledge, method, or reading the question.

Lesson 4: Exam Practice: metamorphic rocks

Duration: 50 minutes

Starter Activity (5 minutes)

Command Words

Review what these command words require: state (one point), describe (say what happens), explain (say why), compare (both sides), evaluate (judgement).

Main Content (35 minutes)

Exam-Style Question

Attempt a past-paper style question on metamorphic rocks from the exam board past paper finder (see Resources), then mark it against the scheme.

Exam Tips: Metamorphic grade increases: slate, phyllite, schist, gneiss, know the sequence | Foliated = directed pressure (regional); Non-foliated = heat only (contact) | Index minerals: chlorite (low), garnet (medium), sillimanite (high) | Parent rock matters: mudstone to slate, limestone to marble, sandstone to quartzite, granite to gneiss
Common Errors: ✗ Metamorphic rocks form from melting ✓ Metamorphic rocks form from solid-state changes, heat and pressure alter the mineralogy and texture WITHOUT melting. If melting occurs, it becomes an igneous process. ✗ All metamorphic rocks are foliated ✓ Only rocks formed under directed pressure (regional metamorphism) develop foliation. Contact metamorphic rocks (e.g. marble, quartzite, hornfels) are non-foliated because only heat, not directed stress, was involved. ✗ Schist forms from sandstone ✓ Schist forms from shale/mudstone (a pelitic parent rock). Sandstone metamorphoses to quartzite, the parent rock composition determines the metamorphic product
Stretch & Challenge (Grade 8-9):
  • Synoptic links: explain how metamorphic rocks connects to another Geology topic you have studied
  • Real-world: research one real-world use or example of metamorphic rocks
  • Critical: "What are the limitations of the models used in metamorphic rocks?"

Plenary (5 minutes)

Assessment Criteria
  • Got it: Confident explanation + correct worked examples
  • Getting there: Main points OK, needs support with detail
  • Not yet: Confused on key concepts - re-run Lesson 2

Homework & Consolidation

Recommended Resources

🎓 Smart Lesson (Guided)