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

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

This online resource investigates the features and topology of the ocean floor, the effects of wave erosion and the landforms created by coastal depositions.

Sometimes, when the probability problems are complex, it can be helpful to graph the situation. Tree diagrams and Venn diagrams are two tools that can be used to visualize and solve conditional probabilities.

This online lesson explores these two tools.

Using a Venn Diagram, students identify similarities and differences between two things by listing certain features in a chart containing overlapping circles. Venn Diagrams can be used to summarize, compare, or comprehend information.

This YouTube video elaborates on what weather is and what causes changes in the weather.

This short online tutorial highlights the difference between weather and climate.

This short online resource elaborates on the difference between climate and weather and why understanding the climate is important.