ClassX Video Lessons Grade Grade 9

Category: Grade 9

The time value of money – German Nande

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What makes tattoos permanent? – Claudia Aguirre

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The coelacanth: A living fossil of a fish – Erin Eastwood

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What causes antibiotic resistance? – Kevin Wu

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The past, present and future of the bubonic plague – Sharon N. DeWitte

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Why do we pass gas? – Purna Kashyap

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If matter falls down, does antimatter fall up? – Chloé Malbrunot

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How do we study the stars? – Yuan-Sen Ting

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A different way to visualize rhythm – John Varney

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How do germs spread (and why do they make us sick)? – Yannay Khaikin and Nicole Mideo

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