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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.

This video explains the angles of elevation and depression.

This online interactive lesson discusses what reflections are and provides examples of reflections.

Role of phagocytes in innate or nonspecific immunity. Neutrophils, macrophages, and dendritic cells.

This video will look at rotation. Rotation involves turning a shape around a set point.

This online lesson explains what rotations are.

In this lesson you will learn about:

1. Enlargement and reduction of shapes using a scale factor.
2. Reflection of geometric shapes.
3. Translation of geometric shapes.
4. Rotation of geometric shapes.

This online lesson explores the concept of translations.

An online application to test your knowledge of evaluating trigonometric functions of special angles.

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

• Define and use the trigonometric ratios of cosθ, sinθ and tanθ.
• Calculate the trigonometric ratios in each quadrant of the Cartesian plane.
• Calculate the value of expressions containing trigonometric ratios.