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Screenshot of How Simple Ideas Lead to Scientific Discoveries - Adam Savage
How Simple Ideas Lead to Scientific Discoveries - Adam Savage
Screenshot of How tall is a tree?
How tall is a tree?
Screenshot of How to create an ellipse
How to create an ellipse
Screenshot of How to derive the area of a circle
How to derive the area of a circle
How to Draw a Perfect Circle Freehand
Screenshot of How to Draw Spirals
How to Draw Spirals
Screenshot of How to make an edge-coloured origami dodecahedron
How to make an edge-coloured origami dodecahedron
Screenshot of How to measure a tree using a stick and some simple maths
How to measure a tree using a stick and some simple maths
Screenshot of How to measure the accuracy of latitude and longitude?
How to measure the accuracy of latitude and longitude?
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