For the Classroom - Units
Objectives:
Familiarize students with the various types of units and how to convert between different units.
Discussion Topics:
English vs. Metric
- Which unit systems are primarily used where
Distance
- mm – (approximately the thickness of a dime)
- Terminology – Machinists express small measurements in thousands of an inch
Temperature
- TF = 2*TC + 32 (Approximately)
- Introduction to Kelvin
Mass
- Mass and weight are related properties of matter, but not the same
Volume
- The amount of space that an object or substance occupies
Pressure
- F=P*area (Examples: Piston/Air cylinder)
Energy
- The ability a physical system has to do work on other physical systems
Power
- Power is the rate at which work is performed or energy is converted
Density
- ρ=m/v (from General Equations section)
- Discuss Different materials
- Strength vs. Weight
- Additional Materials are listed on the inside card
Fractions/millimeters decimals
Unit Prefixes
- Introduce students to Scientific Notation (Exponential Notation)
- Show students how to use scientific notation functions on their calculators
Classroom Practice (with other supporting materials):
- How to use Calipers and a Micrometer
- Use a calculator to perform some basic unit conversations
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