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06:04
Magnetism for Kids | #aumsum
24
B2 High-Intermediate
US
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01:31
What if we stopped drinking water? | #aumsum
63
B2 High-Intermediate
US
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07:25
Basic Subtraction for Kids | #aumsum
31
B2 High-Intermediate
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25:32
How does a plastic comb attract paper? plus 10…
29
B1 Intermediate
US
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01:01
Why does rain smell? | #aumsum
47
B1 Intermediate
US
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05:28
Electrolytic Refining of Metals | #aumsum
10
B2 High-Intermediate
US
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03:11
Soil Formation for Kids | #aumsum
19
B1 Intermediate
US
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01:05
How do dolphins sleep? | #aumsum
56
B2 High-Intermediate
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06:38
Simple Distillation | #aumsum
18
B2 High-Intermediate
US
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01:07
How do X-rays work? |Why is Space Black? | #aumsum
30
B1 Intermediate
US
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05:07
Why do mosquitoes bite only some people? plus…
27
B2 High-Intermediate
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01:04
Why is fluoride added to water? | #aumsum
27
B1 Intermediate
US
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