Talk about it. Use simple words.
Give them specific meaning.
Use your hands.
Draw . Write .
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Some specific meanings
based on Push as a model of Electricity
Volt: how hard you push, voltage
Ohm: how hard it is to push, resistance
Amp: how much gets pushed, current
Direct: pushed in one direction
Alternating: push/pulled back and forth
Series: pushing in a row
positive to negative
Volts add, Amps don't
in switches a logical "and"
Parallel: pushing side by side
positive to positive, negative to negative
Amps add, Volts don't
in switches a logical "or"