http://www.teachengineering.org/view_activity.php?url=collection/wpi_/activities/wpi_time_challenge/time_challenge.xmlactivitytext/xmlK-12 Outreach Office, conservation of energyenergyengineering design processharmonic motionkinetic energyperiodpotential energysimple harmonic motiontiming challengeengineering design processkinetic energypotential energyconservation of energysimple harmonic motionpendulumamplitudeperiod

Students are asked to design simple yet accurate timing devices using limited supplies. The challenge is to create a device that measures out a time period of exactly three minutes. They brainstorm ideas using the different materials provided. Students observe and explain the effects of conservation of energy.

Engineers continually challenge themselves to make better and more accurate devices, tools, systems and processes, including timing devices.. Describe the engineering design process.Explain the concept of conservation of energy in relationship to kinetic and potential energy.Describe simple harmonic motion.242TeachEngineering.orghttp://www.teachengineering.org/collection/wpi_/activities/wpi_time_challenge/pre_activity_quiz.dochttp://www.teachengineering.org/collection/wpi_/activities/wpi_time_challenge/pre_activity_quiz.pdfhttp://www.teachengineering.org/collection/wpi_/activities/wpi_time_challenge/grading_scale.dochttp://www.teachengineering.org/collection/wpi_/activities/wpi_time_challenge/grading_scale.pdfhttp://www.teachengineering.org/collection/wpi_/activities/wpi_time_challenge/student_handout.dochttp://www.teachengineering.org/collection/wpi_/activities/wpi_time_challenge/student_handout.pdfS1011BBAMassachusettsScience2.1 Interpret and provide examples that illustrate the law of conservation of energy.912S1026CE2MassachusettsScience2.2 Provide examples of how energy can be transformed from kinetic to potential and vice versa.912S101DDA3MassachusettsScience4.1 Differentiate between wave motion (simple harmonic nonlinear motion) and the motion of objects (nonharmonic).912S10206E0MassachusettsScience1.1 Identify and explain the steps of the engineering design process, i.e., identify the problem, research the problem, develop possible solutions, select the best possible solution(s), construct a prototype, test and evaluate, communicate the solution(s), and redesign.912United StatesCopyright 2012 - K-12 Outreach Office, Worcester Polytechnic Institutehttp://www.teachengineering.org/policy_ipp.phphttp://www.teachengineering.org/2011-10-259Teacher