The effects of computer-based games and collaboration in large groups vs. collaboration in pairs or traditional methods

As new technologies have emerged in the last few years, the learning process has been changing. New and powerful e-learning systems are being developed and new teaching methods can be used in classrooms. In this paper, we present a computer-based game with an educational background that is played on a large-size tabletop display. The game can be used as reinforcement for educational content related to historical ages. The game uses natural interaction. A study to compare the traditional learning method with a collaborative learning method using the game was carried out. A group of up to 12 children could learn together using the game. The experience of children in large groups was also compared with the experience of children playing in pairs. One hundred children between 8 and 11 years old participated in the study; they were divided into three groups (LGroup, Pairs, TClass). When the pretest and the post-test results were compared, it was shown that the children learned the contents in all three groups. The results also showed that there were statistically significant differences between the traditional method and the game played in a large group in favour of children who played the game in the large group. The knowledge acquired was independent from gender and age. There were no statistically significant differences between learning in large groups or learning in pairs. In both cases, the children expressed their satisfaction for the game and found it easy to use. Therefore, playing games of this type collaboratively in large groups or in pairs can be a valuable learning method that can be combined with traditional methods.This work was funded by the Spanish Government (MICINN) in the APRENDRA project (TIN2009-14319-C02-01). We would like to thank the following for their contributions: - The "Escola d'Estiu" (UPV) and especially Juan Cano, Miguelon Gimenez, and Javier Irimia. - The Engeba school of Valencia (Spain). - Encama Torres, Juan Martinez, Sonia, and M. Jose Vicent for their help. - The children's parents who signed the agreement to allow their children to participate in the study. - The children who participated in the study. - The ETSInf for letting us use its facilities during the testing phase. - The reviewers for their valuable comments.Martín San José, JF.; Juan Lizandra, MC.; Segui, I.; García García, I. (2015). The effects of computer-based games and collaboration in large groups vs. collaboration in pairs or traditional methods. Computers and Education. 87:42-54. https://doi.org/10.1016/j.compedu.2015.03.018S42548

Adult spawning and early larval development of the endangered bivalve Pinna nobilis

[EN] The development of aquaculture activities has posed an alternative solution for the preservation of some overexploited shell¿sh ¿sheries worldwide. In the same way, endemic Mediterranean bivalves such as Pinna nobilis, highly threatened by habitat loss and coastal pollution, could found in aquaculture a solution for preserving the continuity of the species. Given the endangered status of the species, the biological and ecological processes regulating natural populations have been well studied, but there are still important knowledge gaps preventing the development of viable arti¿cial cultures. This study describes for the ¿rst time the larval development of P. nobilis (from fertilization until pediveliger larval stages) in captivity conditions. Moreover, di¿erent rearing tanks of 5, 16 and 80 L, larvae density from 1 to 600 larvae mL¿1, light conditions, food doses, were tested in order to establish the bases for the optimal rearing of the species and provide a source of individuals for restoring ¿eld populations. Results showed that 16 L tanks with a concentration of 2 larvae mL¿1, constant temperature of 21 °C, 12/12 h photoperiod and fed with an ¿optimal¿ mixture of 25 cells per ¿L of Chaetoceros calcitrans + 33.3 cells per¿L ofPavlova lutheri + 100 cells per¿L ofIsochrysis galbana¿ appear to be the best conditions to rearlarvae ofP. nobilis.Di¿erentcaptivity conditions such as loweror highertank volume, larvae density, or food doses; light privation did not report better results for larval development.The present study was financed by the Caisse d'Epargne Cote d'Azur. We are also grateful to the research crew of the Institut Oceanographique Paul Ricard and the Catholic University of Valencia for their technical support and help collecting and maintaining fan mussels. Special thanks to the reviewers for their constructive and necessary suggestions.Trigos, S.; Vicente, N.; Prado, P.; Espinos Gutierrez, FJ. (2018). Adult spawning and early larval development of the endangered bivalve Pinna nobilis. Aquaculture. 483:102-110. doi:10.1016/j.aquaculture.2017.10.015S10211048

Allowing for reflection time does not change behavior in dictator and cheating games

Reaction time, usually measured in seconds, has been shown to be correlated with decisions in experimental games. In this paper, we study how allowing for a full day of "reflection time" alters behavior. We compare behavior in dictator and cheating games when participants make immediate choices with behavior when participants have an extra day to decide, and find that allowing for more time does not affect behavior