Worked examples of where the algebra skills already learned can be used in real life

Continues on from the introduction to linear inequalities video. Explains how to solve linear inequalities. Also explains why we reverse the inequality sign if we multiply or divide by a negative number.

Continues on from the introduction to quadratic inequalities. Shows using a graph how to solve quadratic inequalities.

Explains what a quadratic inequality is with use of a diagram to show the difference between solving inequalities and solving equations.

Defines algebraic term. Gives examples of the different types of terms. Worked examples of simplifying expressions by adding like terms.

An introduction to linear inequalities, definitions. Simple examples.

A demonstration of how to set up a truth table for a Boolean expression, in the context of a particular example.

This screencast starts with a discussion of what it means for switches to be connected in parallel and in series in a switching circuit and how to draw each. Two examples are then given of how to draw circuits where there are several switches with some connected in parallel and some in series in each case.

Example of simplifying a Boolean expression using Boolean Algebra, with particular emphasis on using the rule (p+q)(p+r)=p+qr to help simplify an expression that otherwise would have involved extensive and time-consuming expansion of brackets.

This screencast begins with explanation of 'OR', 'AND' and 'NOT' gates in a logic circuit, including what each gate looks like. An example is then given of drawing a logic circuit which contains several gates.