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In this lesson you will learn about:

• The structure of matter
• Kinetic theory
• The three states of matter

Video 1: Strategies for subtracting decimals
Online activity 1: Subtracting decimals (tenths)
Video 2: Subtracting decimals (hundredths)
Video 3: More advanced subtraction strategies with hundredths
Online activity 2: Subtracting decimals (hundredths)

Part 1: Subtracting integers
Part 2: Examples of subtracting integers
Part 3: Common mistakes made when subtracting integers

Use two methods to find the sum of mixed numbers: improper fractions and mixed numbers

This online resource investigates the internal structure, outer layers and surface features of the sun.

These four short online lessons cover the following:

• What is the sun?
• Interior of the sun
• Outer layers of the sun
• Surface features of the sun

The phases of Meiosis.

This online resource explores the terrestrial, or inner, planets - the planets closest to the sun: Mercury, Venus, Earth and Mars.

Video 1: What tools are required to construct geometrical shapes
Video 2: Examples of how geometrical construction tools can be used
Video 3: Common mistakes made when using geometrical construction tools

This online tutorial will provide you with some guidelines on how to interpret both topographic and geologic maps.