Original scientific papers (evaluated by academic peers)

• Effect of two cytokinins and a growth inhibitor on the in vitro tuberization of two genotypes of Solanum tuberosum L. cvs. Atlantic and Alpha

  José Antonio García-García, José Bernal Azofeifa-Bolaños, Frank Solano-Campos, Rafael Orozco-Rodríguez (Author)

  1-12

  DOI: https://doi.org/10.15359/ru.33-2.1

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• Validation of a liquid chromatography detection method (HPLC-DAD) for the determination of aloin in Aloe vera food products

  Ricardo Ulate-Molina, Henry Borbón-Alpízar, José Pablo Sibaja-Brenes, Ilena Vega-Guzmán, Maricruz Arguedas-González (Author)

  13-26

  DOI: https://doi.org/10.15359/ru.33-2.2

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• Evidence on some pedagogical and didactic trends present in the Costa Rican mathematics curriculum

  Marianela Zumbado-Castro (Author)

  27-41

  DOI: https://doi.org/10.15359/ru.33-2.3

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• Stochastics and special education teaching: centered and uniform distributions

  José Marcos López-Mojica (Author)

  42-54

  DOI: https://doi.org/10.15359/ru.33-2.4

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• Mathematical proof: meaning, types, attributed functions, and relevance as part of math teachers’ professional knowledge

  Cristian Alfaro-Carvajal, Pablo Flores-Martínez, Gabriela Valverde-Soto (Author)

  55-75

  DOI: https://doi.org/10.15359/ru.33-2.5

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• Evaluation of potential contamination of groundwater and spring protection areas of the Maravilla-Chiz and Quebrada Honda sub-basins, Cartago, Costa Rica

  Alicia Fonseca-Sánchez, Helga Madrigal-Solís, Christian Núñez-Solís, Hazel Calderón-Sánchez, Geannina Moraga-López, Alicia Gómez-Cruz (Author)

  76-97

  DOI: https://doi.org/10.15359/ru.33-2.6

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• Understanding Space Weather: Solar Cycles and Magnetic Rossby Waves

  Xiomara Márquez-Artavia (Author)

  98-109

  DOI: https://doi.org/10.15359/ru.33-2.7

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• College education of elementary school teachers: the case of mathematics

  Marianela Alpízar-Vargas, Ana Lucía Alfaro-Arce (Author)

  110-154

  DOI: https://doi.org/10.15359/ru.33-2.8

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