Changing Landforms

Overview

This 30-minute lesson introduces 2nd grade students to the concept of changing landforms, focusing on how natural forces shape the Earth's surface. The lesson aligns with the International Baccalaureate (IB) Primary Years Programme (PYP) Science learning outcomes and emphasizes inquiry, observation, and reflection.

IB Learner Profile Focus

Inquirers: Encouraging curiosity about natural changes.
Thinkers: Developing understanding through observation and reasoning.
Communicators: Sharing ideas and observations clearly.

Transdisciplinary Theme

How the World Works – exploring natural processes affecting the environment.

Central Idea

Landforms change over time due to natural forces.

Key Concepts

Change: How landforms evolve.
Cause and Effect: What causes landforms to change.
Connection: Relationship between forces and the Earth’s surface.

Learning Objectives

By the end of the lesson, students will be able to:

Identify different types of landforms (hill, valley, mountain, riverbank, beach).
Understand that landforms change gradually or suddenly due to natural forces like wind, water, and erosion.
Demonstrate the effect of water on a model landform through a simple experiment.
Use descriptive language to communicate observations.

IB Curriculum Alignment:

PYP Science Scope and Sequence, Grade 2: Understand and describe physical processes that cause change in environments.
Approaches to Learning: Thinking skills (observing, inferring), communication skills (using scientific vocabulary).

Materials Needed

Tray or shallow box
Sand or soil
Small rocks or pebbles
Spray bottle filled with water
Paper towels
Chart paper with images of landforms
Markers

Lesson Breakdown

1. Introduction and Engagement (5 minutes)

Hook: Show photos of familiar landforms (hill, beach, riverbank). Ask students if they think these places always look the same.
Discussion: Briefly explain that landforms can change slowly or quickly because of nature (rain, wind, rivers). Introduce vocabulary: landform, erosion, change, natural forces.

2. Exploration and Experiment (15 minutes)

Activity Setup:
- Build a simple landform model in the tray using sand, soil, and rocks—create a small hill and a riverbank shape.
- Have students predict what will happen if “rain” falls on the landform.
Experiment:
- Using the spray bottle, gently “rain” on the model, observing how water moves the sand or soil, changing the shape of the landform over time.
Observation:
- Students watch carefully and describe what they see happening to the landform. Teacher guides prompts:
  - What is happening to the hill?
  - Where does the water go?
  - How does the shape change?

3. Reflection and Sharing (8 minutes)

Group discussion:
- Ask students to share what they noticed and how natural forces like water can change landforms.
- Chart student observations and vocabulary on the board.
Guide students to connect the experiment to real-world examples (like rain changing hills or beaches).
Introduce the concept that these changes are usually very slow but can sometimes be faster (floods, landslides).

4. Assessment/Conclusion (2 minutes)

Quick formative assessment:
- Students draw a before-and-after picture of the landform experiment and label one change using the vocabulary word erosion.
Collect drawings to review understanding and vocabulary use.

Differentiation

Support: Provide extra verbal cues and one-on-one guidance during the experiment.
Extension: Encourage students who grasp concepts quickly to explain why erosion is important to the environment.

Reflection for Teacher

Were students able to predict and describe changes to the landform?
Did the experiment successfully connect theory to observation?
How can this lesson be extended with local examples or fieldwork?

Inquiry Questions

What causes the shape of the land to change?
How do we know when landforms are changing?
Why is it important to study changing landforms?

This highly visual and hands-on lesson meets the IB PYP objective of nurturing students’ understanding of natural systems through inquiry, carefully scaffolded for 2nd graders’ developmental level while inspiring curiosity about the planet’s dynamic surface.

Teaching Instructions