Maths with Lemon

Surface Area of Complex Shapes

What you have to know:

You must be able to manipulate algebraic expressions.
(If not, check this lesson)
You must know the formulas of surface area and volume of 3D shapes.
(If not, check this file)

Key Points

1. Watch the video:

Volume of 3D Solids

What you have to know:

How to factorise a quadratic expression.

Key Points

1. Watch the video:

3D Pythagoras

What you have to know:

The basic trigonometric properties.
(If not, check this lesson)

Key Points

1. Watch the video:

Angles of Elevation and Depression

What you have to know:

The basic trigonometric properties.
(If not, check this lesson)

Key Points

1. Watch the video:

IB Past Paper Problems

Select a topic and unit, then click the button below to get a new problem.

Choose a Topic: Choose a Unit:

Press the button to start!