Autograph for NCTM TechTip
by nctmbutler
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2 years ago
Autograph investigation: Why are Shot Puts thrown at 31°
Classical models always suggest using 45° to achieve maximum throw, yet all the major throwing sports use around 31°. Douglas Butler investigates u...
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2 years ago
2. Parabolic Sand Dune - analysed by Autograph
Amazingly the wind can blow the desert sand into an amost perfect parabola. Douglas Butler explores this using Autograph, in 2D and 3D!
nctmbutler
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2 years ago
1. Human Cannon Ball - analysed by Autograph
Douglas Butler looks at the path of this brave showman at the Norwich Show in England ...
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