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How many divisors? Animation Play

How many divisors? Whiteboard exercise Play

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How much can you save by using an energy-saving light bulb? Whiteboard exercise Play

How much can you save by using an energy-saving light bulb? Whiteboard exercise Play

How much can you save by using an energy-saving light bulb? Whiteboard exercise Play

How much does it cost to watch television? Student activity Play

How much does it cost to watch television? Whiteboard exercise Play

How much/many has he got? Whiteboard exercise Play

How much/many has he got? Student activity Play

How to calculate the power of an electric current Simulation Play

How to calculate the power of an electric current Student activity Play

How to calculate the power of an electric current Whiteboard exercise Play

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How to transfer energy Student activity Play

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How to use logarithms? Animation Play