Instructables: exploring - living - education - force - popular Sun, 29 Mar 2015 15:40:51 PDT BLOX v1.01 Straw Propellor
Straw Propellor - More DIY How To Projects]]> The Oakland Toy Lab Ever feel like you've wasted your breath on something? Well now every breath you take is going to spread total wonder and joy with this straw propellor. Also a bit of saliva! With three straws only you can create this double-spinner of a physics lesson in forces and air pressure. It takes a bit to g...
By: The Oakland Toy Lab

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Fri, 5 Dec 2014 13:29:28 PST