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Most of us use electricity every day in many different ways so it is important that we understand the dangers, or hazards, associated with electricity and we know how to use it safely.

Video 1: Two-step inequalities
Video 2: Two-step inequality word problem
Video 3: Another two-step inequality word problem
Online activity 1: Answer the short questions on two-step inequalities
Online activity 2: Answer the two-step inequality word problems

When a circuit is connected and complete, charge can move through the circuit. Charge will not move unless there is a reason, a force to drive it around the circuit. Think of it as though charge is at rest and some- thing has to push it along. This means that work needs to be done to make charge move. A force acts on the charges, doing work, to make them move. The force is provided by the battery in the circuit.

This YouTube video elaborates on what weather is and what causes changes in the weather.

Worked examples finding displacement and distance from position-time graphs.