While driving around tonight we noticed different types of stoplights in our town. Some lights are engineered to run on timers while others are engineered to run on sensors. What type do you think are better?
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What type of stoplight is better a timer or sensor?
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SmartyPants Science
Welcome to the SmartyPants Science Channel where kids explore science concepts in fun, inquiry-based ways. This channel is run by Lynette Dickerson, a veteran teacher from South Carolina, and her son, Harper.