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Wheel size: what difference does it make? What if both wheels are small? What if both wheels are large? What if the wheels are different sizes? What if the difference in size is great? What if the difference in size is small? ... Read More
Children's work from Force and Motion units and Energy Systems units
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This material is based upon work supported by the National Science Foundation under Grant Nos. 0096627,046232 and 0733209.
Any opinions, findings and conclutions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the Natoional Science Foundation.