Classification of Materials · SHS2 Manufacturing…

Lesson notes

Learning Objectives

Indicator: 2.1.1.LI.3 - Group materials according to their synthesis.

By the end of the lesson, learners can:

Define material synthesis in their own words and give at least two everyday examples of synthetic materials found in Ghana.
Distinguish between bulk materials, nanomaterials, and thin films based on their size, structure, and method of synthesis.
Classify at least five given materials (e.g., cement, plastic sachet waste, gold nanoparticles, window glass coating) into bulk, nano, or thin film categories with reasons.
Describe at least one synthesis method for each category (e.g., casting, sol-gel, vapour deposition).
Present group findings on material synthesis to the class, responding respectfully to questions and feedback from peers.

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Curriculum details

Strand: Manufacturing Materials and Technologies (Strand 1)
Sub-strand: Classification of Materials (1.1)
Content standard: 2.1.1.CS.2 - Demonstrate understanding in materials processing and synthesis. 2.1.1.LO.1 Classify materials as metals, ceramics and polymers based on their chemical properties, structure, synthesis and processing methods. 3 Gender Equality and Social Inclusion 4 Socio-Emotional Learning
Indicator: 2.1.1.LI.3 - Group materials according to their synthesis.
Suggested placement: Semester 1, Week 7 (Week 7 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. 54

Exemplars (from the NaCCA curriculum)

Collaborative Learning: Learners, in mixed-ability groups read from the library and present to the class on how materials can be synthesised to form new materials. Encourage them to comment on presentations and tolerate others' views
Talk for Learning:
- In pairs, let learners discuss and share their understanding of material synthesis and classify materials to be synthesised as bulk materials, nanomaterials and thin films.
- Learners provide examples of bulk materials, nanomaterials, thin films and their methods of synthesis.
Teaching and Learning Materials:
- * Audio-visuals * Textbooks
- * Educational tour to a material processing company * ICT facilities
Assessment (2.1.1.AS.3). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall; Level 2 Skills of conceptual understanding.