We taught our lesson, centered around the Sol Cycle, to over 1,000 students in grades K - 12 across the country. It was designed around the middle school Next Generation Science Standards. The lesson evolved as we rode and varied depending on age level, interest, time, and weather, but the general structure was the same (see also this interview for a brief description):
Here is a teaser from our lesson in Boise, put together by the wonderful STEM teacher Brian Whitney:
In Fall 2017, Elizabeth worked with Eva Luna at Cornell's xRaise to design a Sol Cycle that can be built for under $5. Dubbed the "DIY-cycle", it can be built with recyclables, a motor, and a small solar panel. Elizabeth and Eva also designed a new lesson to teach students prototyping and backwards design through the DIY-cycle. Here's a picture of the presentation Eva and Elizabeth gave at the NY State Science Teachers Association conference and a 3D-printed version of the newest member of the Sol Cycle family.