Results

What is the acceleration due to gravity at the space station.

By the end of this section, you will be able to:

• Add or subtract fractions with a common denominator
• Add or subtract fractions with different denominators
• Use the order of operations to simplify complex fractions
• Evaluate variable expressions with fractions

Part 1: Adding and subtracting fractions
Part 2: Examples of adding and subtracting fractions
Part 3: Common mistakes made when adding and subtracting fractions

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

Solving a word problem to find average velocity and speed of an object in one-dimension.

Patterns and processes of evolution. How evolution and natural selection are reflected in the similarities and differences of organisms. 

In this unit you will apply your understanding of the components of motion in one dimension using linear equations. This will help you to solve problems about motion in one direction and equip you to understand how these concepts apply to everyday life.

There are three equations for linear motion with constant acceleration. They can be used to calculate, and therefore predict, the outcome of motion when three out of the four variables are known.

Part 1: Comparing like and unlike fractions
Part 2: Examples of comparing like and unlike fractions
Part 3: Common mistakes made when comparing fractions

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