Category: Grade 4

Simple Machines – Gears

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Movements of the Moon

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Adding Batteries in Series to a Simple Circuit

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Adding Batteries in Series – Buzzer

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Adding Batteries in Series – Brightness of Bulbs

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Bulbs Arranged in Series – Brightness of Bulbs

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Bulbs Arranged in Parallel – Brightness of Bulbs

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All About Echolocation (in bats)

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Making a Magnet Using the Stroke Method

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Abiotic Factors in Ecosystems – Soil and Minerals

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