Rocks, Weathering, Soil and… · SHS1 Geography

Lesson notes

Learning Objectives

Indicator: 1.1.2.LI.3. Evaluate the three weathering processes (physical, chemical and biological weathering processes)

By the end of the lesson, learners can:

Distinguish between physical, chemical and biological weathering by describing the key mechanism of each process.
Explain at least two specific agents of weathering under each of the three categories, using local examples where possible.
Analyse a weathering scenario in the environment and correctly identify which type(s) of weathering is at work, justifying their reasoning.
Evaluate the relative importance of the three weathering processes in different Ghanaian environments (for example coastal, forest and savanna zones).
Assess the effects of weathering on human activities such as farming, construction and road building in Ghana, making reasoned judgements.

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Curriculum details

Strand: The Earth and Its Neighbourhoods (Strand 1)
Sub-strand: Rocks, Weathering, Soil and Mass Wasting (1.2)
Content standard: 1.1.2.CS.1 - 1.1.2.CS.1 Demonstrate knowledge in rocks formation and weathering processes 1.1.2.LO.1 Identify the three types of rocks and explain weathering processes
Indicator: 1.1.2.LI.3 - Evaluate the three weathering processes (physical, chemical and biological weathering processes)
Suggested placement: Semester 1, Week 14 (Week 14 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 35

Exemplars (from the NaCCA curriculum)

Talk for learning: Using questions and answers, discuss the types of weathering processes, ensuring all participants are involved.
Experiential Learning: In mixed ability groups embark on a field tour around the school compound or neighbourhood to observe the types of weathering and weathering processes in the environment and make presentation and/or a written field report. Learners should create an environment in which others believe that their thoughts and opinions are valued.

Assessment (1.1.2.AS.3). The document marks these depth-of-knowledge levels for this indicator: Level 4 Extended critical thinking and reasoning.

Teaching and Learning Resources:
- Rock samples in the locality
- Pictures and/or videos on rock types
- Pictures and/or videos and other sources to show rock uses