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

This online resource discusses the distribution of earth's water.

Why do astronauts appear weightless despite being near the Earth?

This video explains how to calculate the perimeter of various 2D shapes.

Basics of gravity and the Law of Universal Gravitation.

This YouTube video will guide you through a fun activity where you will draw the earth's continents and oceans.

This unit is about how things move along a straight line or, more scientifically, how things move in one dimension. Examples of this would be the movement (motion) of cars along a straight road or of trains along straight railway tracks.

This is a short tutorial on how to define and measure the perimeter of shapes

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

1. Define the terms perimeter and area
2. Find the perimeter of any polygon
3. Find the perimeter and area of a trapezium, parallelogram, rectangle and square
4. Find the area of a triangle
5. Find the perimeter and area of a circle

This online resource discusses the importance of the ocean, the layers and composition of the ocean and how it moderates climates.