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Direct linkda S. F. Fagundes, Thayssa; Dutra, Karen Danielle B.; Ribeiro, Carlos Magno R.; de A. Epifanio, Rosa^ngela; Valverde, Alessandra L. – Journal of Chemical Education, 2016
This experiment encourages students to use deductive reasoning skills to understand the correlation between different techniques used in a chemistry laboratory and to extract and analyze curcuminoids using natural products and processed food from a grocery store. Turmeric pigments were used to teach continuous or discontinuous extraction, vacuum…
Descriptors: Science Instruction, Science Experiments, Science Laboratories, Laboratory Experiments
Luchi, Kelly Cristina Gaviao; Montrezor, Luís Henrique; Marcondes, Fernanda K. – Advances in Physiology Education, 2017
The aim of this study was to evaluate the effect of an educational game that is used for teaching the mechanisms of the action potentials in cell membranes. The game was composed of pieces representing the intracellular and extracellular environments, ions, ion channels, and the Na+-K+-ATPase pump. During the game activity, the students arranged…
Descriptors: Undergraduate Students, Dentistry, Foreign Countries, Cytology
El Seoud, Omar A.; Loffredo, Carina; Galgano, Paula D.; Sato, Bruno M.; Reichardt, Christian – Journal of Chemical Education, 2011
The substitution of petroleum-based fuels with those from renewable sources has gained momentum worldwide. A UV-vis experiment for the quantitative analysis of biofuels (bioethanol or biodiesel) in (petroleum-based) diesel oil has been developed. Before the experiment, students were given a quiz on biofuels, and then they were asked to suggest a…
Descriptors: Fuels, Science Instruction, Science Experiments, Laboratory Experiments
Teixeira, Zaine; Duran, Nelson; Guterres, Silvia S. – Journal of Chemical Education, 2008
In this experiment, the extract from annatto seeds was encapsulated in poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) particles by the emulsion-solvent evaporation method. The particles were washed and centrifuged to remove excess stabilizer and then freeze-dried. The main compound of annatto seeds, bixin, has antioxidant properties as well…
Descriptors: Research Methodology, Chemistry, Scientific Concepts, Hands on Science
De Avila, Paulo, Jr.; Torres, Bayardo B. – Biochemistry and Molecular Biology Education, 2010
Understanding the scientific method fosters the development of critical thinking and logical analysis of information. Additionally, proposing and testing a hypothesis is applicable not only to science, but also to ordinary facts of daily life. Knowing the way science is done and how its results are published is useful for all citizens and…
Descriptors: Undergraduate Students, Critical Thinking, Logical Thinking, Publications
Download full textde Campos, Reinaldo Calixto; Filho, Aricelso Maia Limaverde; Carneiro, Maria Tereza W. Dias; Godoy, Jose Marcus de Oliveira; Goulart, Mauricio Silveira; Guerchon, Jose – 1998
This paper describes the Project for Integrating the University, the School, and Society (PIUES), developed as part of an effort to restructure the teaching of engineering at the Pontifical Catholic University in Rio de Janeiro, Brazil. New courses for high school teachers were developed that focused on the debates over basic concepts in…
Descriptors: Chemistry, Foreign Countries, High Schools, Higher Education
Gawryszewski, Luiz G.; Carreiro, Luiz Renato R.; Magalhaes, Fabio V. – Psicologica: International Journal of Methodology and Experimental Psychology, 2005
A non-informative cue (C) elicits an inhibition of manual reaction time (MRT) to a visual target (T). We report an experiment to examine if the spatial distribution of this inhibitory effect follows Polar or Cartesian coordinate systems. C appeared at one out of 8 isoeccentric (7[degrees]) positions, the C-T angular distances (in polar…
Descriptors: Stimuli, Reaction Time, Mathematics Activities, Cues
Novotna, Jarmila, Ed.; Moraova, Hana, Ed.; Kratka, Magdalena, Ed.; Stehlikova, Nad'a, Ed. – International Group for the Psychology of Mathematics Education, 2006
This document contains the second volume of the proceedings of the 30th Annual Conference of the International Group for the Psychology of Mathematics Education. Conference presentations are centered around the theme "Mathematics at the Centre." This volume features 60 research reports by presenters with last names beginning between Abr…
Descriptors: Program Effectiveness, Foreign Countries, Middle Schools, Textbooks
