Unit: 20L ESR Making Decisions

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Overview: 
This unit continues developing programming and building skills by using sensors to make decisions and linkages to move without wheels. They explore the Switch Block from the orange palette which allows the EV3 to "sense its environment" and change the flow of the program based on the sensor value. Taking this a step further and putting the Switch Block inside a Loop Block allows for rapid/repeated decisions which enable behaviors like line following and obstacle detection. The unit ends with a building challenge to build a robot to moves without wheels.
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