The Relation Of Mental Age To Problem Solving Ability In Arithmetic.
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An Analysis Of The Elementary Course Of Statistics With Implications For Revision And Improvement.
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The Effect Of Certain Immature Procedures On The Learning Of Arithmetical Processes By Second Grade Children.
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The Characteristics Of The Procedures Of Good And Poor Problem Solvers In Sixth Grade Arithmetic.
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The Relative Effects Of Individual Competition And Group Competition As Motivational Factors In Achievement In Arithmetic At Three Levels Of Intelligence.