### Lesson Plan: Rocks of the Earth
**Subject:** Geography
**Grade Level:** Senior Secondary 1
**Duration:** 60 minutes
#### Objective:
By the end of this lesson, students will be able to:
1. Identify and classify the three main types of rocks: igneous, sedimentary, and metamorphic.
2. Understand the rock cycle and the processes that lead to the formation of different types of rocks.
3. Describe the characteristics and examples of each type of rock.
#### Materials:
- PowerPoint presentation or slides
- Rock samples (igneous, sedimentary, metamorphic)
- Magnifying glasses
- Worksheet/activity sheets
- Whiteboard and markers
- Internet access for videos and additional resources (optional)
#### Lesson Outline:
1. **Introduction (10 minutes)**
- Begin with a brief discussion on what rocks are and their importance to the Earth.
- Display different rock samples and ask students to describe them based on their initial observations.
2. **Presentation and Explanation (15 minutes)**
- Use a PowerPoint presentation or slides to explain the three main types of rocks:
- **Igneous Rocks:** Formed from the cooling and solidification of magma or lava. Provide examples like granite and basalt.
- **Sedimentary Rocks:** Formed from the accumulation and compaction of sediments. Provide examples like limestone and sandstone.
- **Metamorphic Rocks:** Formed from the transformation of existing rock types due to heat, pressure, and/or chemically active fluids. Provide examples like marble and slate.
- Describe the rock cycle and the processes of formation for each type (e.g., melting, cooling, weathering, erosion, compaction, and metamorphism).
3. **Interactive Activity (15 minutes)**
- Pass around rock samples for students to examine with magnifying glasses.
- Have students work in pairs or small groups to classify the samples based primarily on characteristics discussed (texture, grain size, color, presence of crystals, etc.).
- Collect student observations on the whiteboard, creating a comparative chart for igneous, sedimentary, and metamorphic rocks.
4. **Worksheet/Activity Sheets (10 minutes)**
- Distribute worksheets including activities like matching rock types to their formation process, labeling a diagram of the rock cycle, and identifying rock sample images.
- Crystallization from lava (Igneous)
- Accumulation and cementation (Sedimentary)
- Transformation under heat and pressure (Metamorphic)
5. **Discussion and Q&A (5 minutes)**
- Open the floor for any questions students may have about the differences and formation processes of the different rocks.
- Clarify any misunderstandings from the worksheet or activities.
6. **Summary and Homework Assignment (5 minutes)**
- Summarize the key points of the lesson: types of rocks, rock cycle, and examples of each type.
- For homework, assign students to find and bring a rock sample to the next class, which they will classify and present based on what they learned.
#### Assessment:
- Students will be evaluated based on their participation in class activities and discussions.
- Accuracy and completeness of the worksheet/activity sheets.
- Quality and correctness of their classification and presentation of the homework rock sample.
#### Additional Notes:
- If time permits, consider showing a short educational video on rock formation and the rock cycle.
- Adjust the lesson plan based on the students' prior knowledge and engagement level.