We began this unit by reading the story, Leif Catches the Wind.
The final design challenge was to design and create windmill blades that would spin on a rotor and lift weights. Scholars relied on what they had learned in designing and building sails to imagine the possibilities and plan their windmill designs (the first two stages of the engineering process). Then it was on to the design stage.
These are the first designs:
Scholars learned a lot about materials and their properties as well as design techniques at our first testing session.
The next stage in the engineering process is the improve stage. Scholars applied what they learned in the first round of testing to their second windmill design.
These are the second designs.