The determination for the modal age level for grades seven and nine for the difficulty of the principle: a body at rest or in motion will remain at rest or continue in motion in a straight line unless compelled by some force to change its condition of rest or motion.
Thesis (Ed.M.)--Boston University
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Language: | en_US |
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Boston University
2014
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Online Access: | https://hdl.handle.net/2144/9527 |