Earth, Solar System

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A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.

Movements of the Earth: Seasons
The causes and impacts of Earth’s seasons on daily light cycles and heat input.

Geocentric to Heliocentric Models of the Solar System
A brief introduction to our changing views of the Universe.

Exploring Our Solar System
An introduction to the Solar System and the planets that are in it.

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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