This experiment describes a simple protocol for teaching acid-base titrations using potentiometry, conductivity, and/or photometry to determine end points without an added indicator. The chosen example examines the titratable acidity of a red wine with NaOH. Wines contain anthocyanins, the colors of which change with pH. Importantly, at the…

The increasing urbanization and alienation from nature reduce children's opportunities to interact with plants and challenge teachers to devise educational practices that contribute to learning botany. This study presents the results of activities developed in a Brazilian school through explorations, drawings, dried and pressed specimens, and…

In this paper, we propose some of the strategies and methodologies for teaching high-school physics topics through an educational robotics show. This exhibition was part of a set of actions promoted by a Brazilian government program of incentive for teaching activities, whose primary focus is the training of teachers, the improvement of teaching…

One important challenge for researchers is to understand what happens inside classrooms that make the environment available for children's learning. This study develops the margin|centre dialectic as a general framework for describing participation of very young children in science-related activities. It employs a cultural-historical approach that…

This paper is a report on the teaching experiment conducted in the Introduction to Engineering I course at PUC-Rio's Technical-Scientific Center (CTC) during the two terms of 1997. The idea was to test and develop hands-on teaching methodology as set forth in "Hands-on Teaching and Concurrent Teaching: Relations and Difficulties" (Carmo…

This paper presents the experiment being conducted in the Electric Circuits II course (ELE1103) at PUC-Rio's Electrical Engineering Department since March 1997. This experiment was held in both the fall and the spring semesters of 1997. The basis for the experiment was concurrent teaching methodology, to which the principles of entrepreneurship…

These proceedings contain the papers of the IADIS International Conference on Cognition and Exploratory Learning in the Digital Age (CELDA 2013), October 22-24, 2013, which has been organized by the International Association for Development of the Information Society (IADIS), co-organized by The University of North Texas (UNT), sponsored by the…