Resources and Tools for Elementary Math Specialists and Teachers
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    • 5
      A Train of Many Colors
      By Uncle Bob on 05/23/2012 - 09:24
    • The app is easy to use, provides good mouse or touchpad practice for younger students, and keeps a record of several trains for comparisons. As is often the case at nrich, the student solutions raise new questions, in this case, does the order of the rods make a difference? What is a combination?