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There are some key words that you need to know for circles: radius, circumference, diameter, sector, segment, tangent, chord and arc. In this video you will discover what they all mean.

This video discusses the topic of circles.

By the end of this unit you will be able to:

• Understand when to use Venn diagrams.
• Draw Venn diagrams.
• Interpret Venn diagrams.

This video explains the equation of a circle.

Use the dynamic worksheet to practice simplifying expressions with fractional exponents, rewriting them as radicals.

Three activities which illustrate the law of exponents.

This is a simple video which describes how indices problems are solved using simplified laws.

This video looks at set notation, Venn diagrams and probability.

Online problems where the student is required to simplify the expression using the product property of exponents.