Start by explaining the Scientific Method, then move on to simple logic, simple physics, six basic machines, simple hand tools, fire & combustion. Each of these could be one lesson. All 'tech' comes from these. Then bring in a one cylinder four-stroke and put it together. Do the same with a permanent-magnet brushless motor. Teach the basics; they will learn DIY.
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Start by explaining the Scientific Method, then move on to simple logic, simple physics, six basic machines, simple hand tools, fire & combustion. Each of these could be one lesson. All 'tech' comes from these. Then bring in a one cylinder four-stroke and put it together. Do the same with a permanent-magnet brushless motor. Teach the basics; they will learn DIY.