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Enzymes as catalysts for reactions in biological systems; discussion of substrates, active sites, induced fit, and activation energy.

This video explains the equation of a circle.

Part 1: Equivalent fractions and the simplest form of a fraction
Part 2: Examples of equivalent fractions
Part 3: Common mistakes and misconceptions

In this unit you will learn how to identify equivalent metric units of capacity.

In this online course, you will learn how to identify equivalent metric units of mass.

Clarifying some points on evolution and intelligent design.

Outcomes

In this course you will learn how to:

1. Use exponential notation and exponential identities.
2. Multiply exponents.
3. Divide exponents.
4. Raise a power to a power.
5. Change fractional exponents to radical form.
6. Simplify surds.

This video looks at the exterior angles of polygons.

In this video we’re going to discover how to factorise quadratics that don’t have 1 as the coefficient of the x-squared term. These are called non-monic quadratics. We can do it by trial and error and just spotting the factors, but this takes a lot of trial an error. Luckily there is a different method we can use instead, which we will looks at in this video.

This video explains how to find factors.