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Overview of types of immune responses. Difference between innate and adaptive immunity. Differences between humoral adaptive immunity and cell-mediated adaptive immunity.

Outcomes

In this course you will learn about:

1. Expanding brackets.
2. Factorising by grouping.
3. Factorising by finding the difference of two squares.
4. Factorising trinomials.
5. Simplifying algebraic fractions

This video explains the angles of elevation and depression.

These three short online lessons discuss asteroids, comets and meteors.

This video explains about coefficient, constant, variable and exponents. Useful for introductions to the topic and/or extension work. 

An interactive lesson discussing congruent triangles.

Outcomes

In this course you will learn about:

1. Conditions for congruency.
2. Proving congruent triangles.

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

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

These two short online tutorials discuss how the earth rotates and then the earth's revolutions.

In the first URL, the YouTube video explains why earth has spring, summer, autumn and winter seasons. The second URL summarizes the key takeaway points.