Lesson Notes By Weeks and Term v3 - Senior Secondary 1

Lesson Video

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

Lesson summary

This topic introduces students to the fundamental skills of soldering and desoldering, which are crucial in the assembly, repair, and maintenance of electronic circuits and devices. In Nigeria, the ability to properly solder and desolder components is a highly valuable skill, essential for technicians working in electronics repair shops (e.g., GSM repair villages, TV/radio repair centres), manufacturing facilities, and even for individuals who wish to repair their own electronic gadgets. Mastering these techniques not only fosters practical skills but also opens up entrepreneurial opportunities in the rapidly growing electronics service sector. This knowledge contributes significantly to...

Teacher activity

• Introduce the topic "Soldering and Desoldering in Electronic Circuit" and its relevance, drawing on examples of faulty electronic devices common in Nigerian households (e.g., non-functional radio, TV, phone charger, fan regulator).
• Display and identify actual soldering and desoldering tools and materials (if available). If not, use detailed diagrams or pictures.
• Explain the function of each tool (soldering iron, solder, flux, desoldering pump, wick, stand, safety glasses).
• Define soldering and desoldering, emphasizing the principles of good soldering.
• Demonstrate the proper procedure for tinning a soldering iron tip and cleaning it.

Evaluation guide

• Formative Assessment Strategies:
• Observation: The teacher observes students during practical activities (if available) or group discussions, noting their understanding of procedures, tool handling, and safety adherence.
• Q&A: Oral questioning during the lesson to check for immediate understanding (e.g., "What is the function of this tool?", "What is a cold joint?").
• Mini-Quiz: A short, ungraded quiz at the end of a section to gauge comprehension of key terms and concepts.
• Diagram Analysis: Presenting students with diagrams of good and bad solder joints and asking them to identify and explain the differences.