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Apparatus for Teaching or Studying Mathematics
Apparatus for Teaching or Studying Mathematics
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机译:数学教学仪器
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摘要
Apparatus for teaching or studying mathematics comprises a plurality of elements, the elements being so coloured that the apparatus mathematically links colours allocated to prime factor number bases of whole numbers or of whole number denominators of unit fractions to the powers of the indices of the prime factor number bases, forming a ratio of indices which is displayed as colour strips across the width of at least one length face of the elements. IMAGE
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