Lesson Notes By Weeks and Term v4 - JHS 2

Lesson Video

This page supports the lesson note with a companion video and a short classroom-ready summary.

For class groups and homework, share this lesson page so learners also get the summary, objectives, and full lesson context.

Performance objectives

• Identify and describe sandy, loamy, and clay soils.
• Explain how each soil type retains water and supports plant roots.
• Understand how to test water retention in different soils.
• Discuss the importance of soil in agriculture and our environment.

Lesson summary

Soil is the thin layer of material on the Earth’s surface where most crops grow. In Ghana, farming, gardening, building, and even water supply depend on the type and condition of soil. For example, a farmer in the Northern Region needs soil that can hold enough water for maize during dry periods, while a mason in Accra needs soil with good strength for blocks and foundations. Understanding the physical properties of soil helps learners explain why some soils are good for farming, why some areas flood easily, and why some lands crack in the dry season.

Lesson notes

2.1 What is Soil? Soil is a mixture of: Mineral particles (sand, silt, clay) Organic matter (decayed plants/animals called humus) Water Air Living organisms (worms, insects, microbes)

This lesson focuses on physical properties—things we can observe or measure without changing the soil into a new substance.

2.2 Soil Types (Based on Texture and Particle Size) Soil type is often described by texture, which depends on the size of particles. (A) Sandy Soil Particle size: Large grains (feels gritty) Spaces between particles: Large spaces Water movement: Water passes through quickly Water-holding capacity: Low Common Ghana examples: Coastal areas (e.g., parts of Central/Greater Accra), river banks

Effect on plants: Roots can penetrate easily because it is loose, but plants may suffer because water drains away quickly. (B) Clay Soil Particle size: Very small particles (feels smooth and sticky when wet) Spaces between particles: Very small spaces Water movement: Very slow Water-holding capacity: High Common Ghana examples: Some valley bottoms, areas with heavy soils

Evaluation guide

• Collect and describe different samples of soils (sandy soil, loamy soil,
• clay soil, etc.) from the school garden and the community.
• Discuss how each soil type retains water and supports the root
• system of plants.