Showing 1 - 2 results of 2 for search 'Speer, William R.', query time: 0.12s Refine Results
  1. 1
    Virtual Manipulatives: Design-based Countermeasures to Selected Potential Hazards
    by Speer, William R.
    Published 2012
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  2. 2
    Creating Desirable Difficulties to Enhance Mathematics Learning
    by Speer, William R.
    Published 2012
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