Next we went over some key vocabulary such as "lift", "pulley system", "counter weight" and "cable". We also watched a short video clip of the science behind the elevator:
https://www.youtube.com/watch?v=E2duEzrOS6M
Then the students were presented with the following design challenge:
- Your engineering challenge today is to build a one-foot tall Lego structure that has a pulley system that can elevate five small washer weights. Materials to use are a bag of Lego's, two feet of string, a paper clip and a ruler.
Students talked about their design ideas and did a short amount of research on their net-books before building.
Most students were able to engineer a solid structure that could pull up the goal of five small weights. Our last step was writing a reflection of what they engineered, how it performed, and what they learned from this activity.
Well done Champions!