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1281

Portal de Revistas UNA

artículo original

A look of the contributions of the methodological strategies in learning biology

by Pereira-Chaves, José

Published 2015

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1282

Portal de Revistas UNA

artículo original

Pesticides import and health hazards. Central America, 2005 - 2009

by Bravo-Durán, Virya, Berrocal-Montero, Silvia-Elena, Ramírez-Muñoz, Fernando, de-la-Cruz-Malavassi, Elba, Canto-Mai, Nonato, Tatis-Ramírez, Anabel, Mejía-Merino, Winston, Rodríguez-Altamirano, Teresa

Published 2015

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1283

Portal de Revistas UNA

artículo original

Common Content Knowledge manifested by a teacher in teaching basic concepts of functions: A case study

by Rodríguez-Flores, Ariana, Picado-Alfaro, Miguel, Espinoza-González, Jonathan, Rojas-González, Nielka, Flores-Martínez, Pablo

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1284

Portal de Revistas UNA

artículo original

The conceptual fields theory and its role in Mathematics Education

by Alfaro-Carvajal, Cristian, Fonseca-Castro, Jennifer

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1285

Portal de Revistas UNA

artículo original

Perceptions of In-Service Elementary School Teachers towards Mathematics and its Teaching Regarding the Official Programs of the Ministry of Public Education

by Chaves-Esquivel, Edwin, Alpízar-Vargas, Marianela, Alfaro-Arce, Ana-Lucía

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1286

Portal de Revistas UNA

artículo original

¿Is it necessary to analyze the relationship between mathematics teacher and the shaping of attitudes and the beliefs toward this discipline?

by Gamboa-Araya, Ronny

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1287

Portal de Revistas UNA

artículo original

Academic performance in the high school mathematics standardized test at metropolitan and remote areas of Costa Rica schools in 2013

by Castillo-Sánchez, Mario, Chavarría-Vásquez, Jesennia-Ma., García-Borbón, Marcela

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1288

Portal de Revistas UNA

artículo original

The experiences of teachers of mathematics in classroom work with blind people

by Bolaños-González, Helen, Céspedes-López, Michael, González-Jiménez, Cynthia

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1289

Portal de Revistas UNA

artículo original

Dimensionality Reduction Methods: Comparative Analysis of methods PCA, PPCA and KPCA

by Arroyo-Hernández, Jorge

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1290

Portal de Revistas UNA

artículo original

Teaching Mathematics History as a Teaching Resource from High School Education Curricular Guidelines in Costa Rica (1949 – 2012)

by Castro-Soto, Leonel, Cortés-Campos, Patricia, Guzmán-Gómez, Roberto, Lezcano-Arias, Noemí, Mora-Coto, Grettel, Rosales-Fernández, Natalia, Picado-Alfaro, Miguel

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1291

Portal de Revistas UNA

artículo original

Statistical Evaluation of the Levels of Mercury Detected in Billfish in Costa Rica, for 2003-2013

by Rodríguez-Yáñez, Javier, Piedra-Marín, Gilberto

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1292

Portal de Revistas UNA

artículo original

FUsaM: Framework for Measuring Usability Mobile Applications Based on an SPL

by Enríquez, Juan G., Casas, Sandra I.

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1293

Portal de Revistas UNA

artículo original

Measurement of Carbon Footprint at National University of Costa Rica for 2012-2014. Heading for Carbon Neutrality

by Chavarría-Solera, Fabián, Molina-León, Óscar Mario, Gamboa-Venegas, Rebeca, Rodríguez-Flores, Jeison

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1294

Portal de Revistas UNA

artículo original

Growth of Weakfish Hatchery-produced Juveniles, Cynoscion Squamipinnis (Perciformes: Sciaenidae) in Captivity

by Boza-Abarca, Jorge, Ramírez-Alvarado, Marvin, Barquero-Chanto, Juan, Calvo-Vargas, Emilia, Berrocal-Artavia, Karen

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1295

Portal de Revistas UNA

artículo original

Glyphosate Resistance in Weed Biotypes (Paspalumpaniculatum L.) in the Costa Rican Caribbean Region

by Ramírez-Muñoz, Fernando

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1296

Portal de Revistas UNA

artículo original

GNSS Geodetic Network for Linking Between the Dynamic Datum SIRGAS and the CR05 System for Costa Rica

by Rivas-Guzmán, María José, Moya-Zamora, Jorge

Published 2016

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1297

Portal de Revistas UNA

artículo original

Tintinnids Diversity and Abundance in Estuarine Waters of Two Marine Areas for Responsible Fishing in the Gulf of Nicoya, Costa Rica

by García-Rojas, Andrea, Vega-Bolaños, Hannia, Quesada-Phillips, Valeria

Published 2017

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1298

Portal de Revistas UNA

artículo original

Activities That May Influence the Risk of Crocodile (Crocodylus Acutus: Reptilia: Crocodilidae) Attack to Humans in the Tempisque River Area, Guanacaste, Costa Rica.

by Sandoval-Hernández, Iván, Duran-Apuy, Alejandro, Quirós-Valerio, Jacqueline

Published 2017

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1299

Portal de Revistas UNA

artículo original

Proximate Composition in Some Species of Fish and Seafood Available on the Costa Rican Pacific Ocean

by Fonseca-Rodríguez, Cristian, Chavarría-Solera, Fabián

Published 2017

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1300

Portal de Revistas UNA

artículo original

Evaluation of Relative Abundance and Perception of the Presence of Rock Pigeons Columba Livia (Columbiformes: Columbidae) at the National University of Costa Rica

by Ramírez-Alán, Óscar, De la O-Castro, Jorge, Bolaños-Picado, Dayatri, Mc Queen-Blanco, Jean Karl

Published 2017

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

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