Part of Unit: Preventive Maintenance and Trouble shooting
Lesson Plan Overview / Details
This lesson is about soldering and desoldering electrical connections. Most of the time, as a repair technician, a faulty electrical connection is fixed by replacing the part without having to solder anything. But, on occasion, you will find it necessary to be able to solder a connection. This is the lesson to teach you how to desolder/solder.
California Career and Technical Education Standards
- ED.B.B3.4 Understand the fabrication processes and how they are applied in the electronics...
- ED.B.B3.5 Use appropriate electronic instruments to analyze, repair, or measure electrical...
- ED.B.B4.6 Understand the process of assembling, testing, and troubleshooting computer equi...
- ED.B.B4.7 Use utility software and test equipment efficiently to diagnose and correct prob...
California Academic Content Standards (Reinforced)
Objectives and Goals
- Students will learn how to prepare and maintain a soldering iron.
- Students will learn how to solder wire and circuits to circuit boards
Activities in this Lesson
- Introduction Project Video - Hooks / Set
Play this video while taking attendance at the beginning of the class. The students will not have enough time to complete the project during that time, but it may interest them enough that you can do this as a complete lesson for the next day.
- How to Solder - Demo / Modeling
Show this video- A basic demonstration on how to solder and de-solder. After the Video I set up a soldering station in my class room. I have a camera on it going to my projector. I demonstrate the following.
1. Place Soldering Iron in a holder and plug it in.
2. I have on safety glasses and a small fan to blow fumes.
3. I have a sponge to clean the iron.
4. I have a piece of copper , I clean it with flux .
5. I then melt the solder and create a puddle of solder and move it on the copper with the Iron.
6. I then let it cool.
7. I then heat it up and use a solder sucker to remove it from the copper.
- Practice Soldering and De-Soldering - Guided Practice
Now its time to practice, Students should move to solder stations in groups. This time they will follow me on the projector, I use teacher aids to roam the room to help or advanced students who have completed the assignment before. The teacher needs to keep an eye on what’s going on and I go very slowly. I have found the students to be very engaged and excited. After they have mastered this I move on to removing components from old motherboards. I do it on the projector and they do it at the workstation. The practice is guided by the instructor.
- Students remove solder from circuits - Independent Practice
The students are now given circuits and asked to remove parts and reinstall them at the solder stations. I allow them to work independently while i roam the room with aids on interrupting for safety reasons.
- Activity #5 - Assessment
Have the students remove and replace a part from a mother board. Grade them on how well they did.
- Assessment Types:
Students will demonstrate their ability to solder and de-solder. Provide a copy of the Assessment as well as the materials listed in the document to each student. The students will have to prepare, solder, and cleanup 3 different types of connections, as well as de-solder a circuit from a printed circuit board. You will grade by observation of:
-proper use of the equipment
-good solder joints