Original scientific papers (evaluated by academic peers)

• Belief system of future teachers on Education for Sustainable Development in math classes

  Claudia Vásquez, María José Seckel, Ángel Alsina (Author)

  1-30

  DOI: https://doi.org/10.15359/ru.34-2.1

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• Revisiting the fundamentals of p-nitrophenol analysis for its application in the quantification of lipases activity. A graphical update.

  Randall Syedd-León, Manuel Sandoval-Barrantes, Humberto Trimiño-Vásquez, Luis Roberto Villegas-Peñaranda, Gerardo Rodríguez-Rodríguez (Author)

  31-43

  DOI: https://doi.org/10.15359/ru.34-2.2

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• Determining basic health intervals in tortugas resbaladoras (Trachemys scripta emolli) of the Caño Negro Wildlife Refuge, Costa Rica

  Laura Fournier-Gutiérrez, Marco V. Herrero, Rosibel Barrantes-Barrantes, Kinndle Blanco-Peña (Author)

  44-54

  DOI: https://doi.org/10.15359/ru.34-2.3

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• Description and implementation of an algebraic multigrid preconditioner for H1-conforming finite element schemes

  Helen Guillén-Oviedo, Jeremías Ramírez-Jiménez, Esteban Segura-Ugalde, Filánder Sequeira-Chavarría (Author)

  55-81

  DOI: https://doi.org/10.15359/ru.34-2.4

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• Physical, chemical, and biological treatment of chemical waste from teaching laboratories at Universidad Nacional, Costa Rica

  Jorengeth Abad Rodríguez-Rodríguez, Seiling Vargas-Villalobos, Carmen Aparicio-Mora, Nidya Nova-Bustos, Margaret Pinnock-Branford (Author)

  82-94

  DOI: https://doi.org/10.15359/ru.34-2.5

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• An analysis of the graph interpretation practice in engineering’s students in a laboratory of Physics’ context

  Arianna Berenice Garza-Kanagusico, José David Zaldívar-Rojas, Samantha Quiroz-Rivera, Carlos Eduardo Rodríguez-García (Author)

  95-113

  DOI: https://doi.org/10.15359/ru.34-2.6

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• Criteria used by mathematics teachers to pose problems in the classroom

  Luis R. Pino-Fan, Daniela Ilse Báez-Huaiquián, Juan G. Molina-Cabero, Elizabeth Hernández-Arredondo (Author)

  114-136

  DOI: https://doi.org/10.15359/ru.34-2.7

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• Emotional profile of mathematics teachers

  María S. García-González, Josué Ramos-Silverio (Author)

  137-152

  DOI: https://doi.org/10.15359/ru.34-2.8

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• Digital information and communication technologies as a didactic resource in the mathematics curriculum

  Iaqchan Ryokiti Homa-Agostinho, Claudia Lisete Oliveira–Groenwald (Author)

  153-170

  DOI: https://doi.org/10.15359/ru.34-2.9

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