Determination for the modal age level for the grades IV and VI of the difficulty of the principle: a body at rest remains at rest, and a body in motion continues to move at constant speed along a straight line, unless the body is acted upon in either case by an unbalanced force.
Thesis (Ed.M.)--Boston University
Main Author: | |
---|---|
Language: | en_US |
Published: |
Boston University
2015
|
Online Access: | https://hdl.handle.net/2144/10665 |