There are basically four components in electronics They are:
Resistor resist the flow of electricity.
Here is it's schematic syllable:
To determine the value of a resistor (or how much resistance a resistor has) we use this color code system.
To help you understand the color code system, complete this assignment.
Alternative assignment (recommended) :
Have each student take several random resisters, decode them, and then check there work with a Meeter.