3.1 Introduction to Materials

• Meaning of materials used in production
• Materials used in production in the locality
• Metallic materials found in the locality
• Non-metallic materials found in the locality
• Distinguishing metallic and non-metallic materials
• Sustainable ways of using materials in production
• Importance of materials in production

• identify materials used in production
• distinguish between metallic and non-metallic materials found in the locality
• describe sustainable ways of using materials in production
• appreciate the importance of materials in production

“How are materials used sustainably?”

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1. Meaning of materials used in production
   40 min · 1 practice tasks · quiz
   What materials are in Pre-Technical Studies: the substances production starts with before a stool, gate or jerican exists.
2. Identifying materials in the locality
   40 min · 1 practice tasks · quiz
   Pointing at and naming materials used in production at home, school, workshop and market.
3. Metallic materials in the locality
   40 min · 1 practice tasks · quiz
   Identifying common metallic materials Grade 7 already meets: iron or steel, aluminium and copper, without full 3.2 property tests.
4. Non-metallic materials in the locality
   40 min · 1 practice tasks · quiz
   Identifying non-metallic materials Grade 7 already meets: wood, stone, plastics, paper, rubber, cement, glass and ceramics.
5. Distinguishing metallic and non-metallic materials
   40 min · 1 practice tasks · quiz
   Sorting local objects (and their parts) into metallic and non-metallic piles and saying why.
6. Sustainable use and why materials matter
   40 min · 1 practice tasks · quiz
   Reduce, reuse, repair and recycle in Kenyan production, and appreciating that without materials there is no product.