Subject: Physics
Topic: Physical Quantities and Units
Specific Objectives: Students should be able to:
1. Recall the fundamental Quantities of the international system and their related symbols.
2. Recall the base units for the fundamental quantities in the SI system and their related symbols.
3. Explain the need for standard units in measurement.
Teaching strategies: Discussion, Classwork, Lecture, video, demonstration.
Instructional Materials: Syllabus, Physics textbook
Lesson Introduction: The SI is a system of units used in physics. There are seven basic quantities having seven basic units and these are used to derive all other quantities.
Development and summary of lesson: The SI system will be discussed and students will be given the different quantities and units that are taken as basic. The symbols used for the quantities and units will also be given in tabular form.
The need for using these standard units will be discussed as well as problems that may arise when using non-standard units.
Evaluation Of lesson: At the end of the lesson, question will be given to the students to test how well they understand the concepts taught.
THE SI SYSTEM
The SI system (International System of Units) is the modern metric system of measurement and the dominant system of international commerce and trade. SI units are gradually replacing Imperial and USCS units.
Derive Units
Derived units are algebraic combinations of the seven base units and the two supplementary units with some of the combinations being assigned special names and symbols.
Video
EXCEL BEYOND EXPECTATIONS CXC/CSEC
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