Using river locks to teach hydrodynamic concepts

Abstract

In this work, it is proposed the use of a river lock as a non-formal setting for teaching hydrodynamical concepts. In particular, we describe the operation of a river lock situated in the Sobradinho's dam, at the São Francisco River (Brazil). A model to represent and to analyse the dynamics of a river lock operation is presented and we derive the dynamical equations for the rising of the water column as an example to understand the Euler's equation. Furthermore, with this activity, we enable an integration between the content initially introduced in the classroom with practical applications, allowing the association of physical themes to contents relevant in other disciplines such as History and Geography. Besides this, experiences of this kind enable teachers to talk about the environmental and social impacts caused from the construction of a dam and, consequently, crossover of concepts have been possible, making learning more meaningful for the students.

Adapting the Euler–Lagrange equation to study one-dimensional motions under the action of a constant force

“…However, this work opens new possibilities in the discussions about the removal of the force concept from mechanical courses, once this one is in the end of its life cycle [2]. Among the perspectives of this work, we can cite the possibility to extend this formulation for more complex problems, such as two-dimensional motions and fluidodynamics [13]. M A S Araújo is physics teacher in primary and secondary schools at Senhor do Bonfim.…”

Thermal Expansion and Hydrostatic Pressure Experiment Using Common Materials for Supporting Science Education in a Rural Area at Central Sulawesi, Indonesia

“…Complete laboratory instruments are required to enhance science learning in classrooms for the reason that almost all scientific concepts are associated with real-life phenomena (Carvalho-Santos et al, 2013). However, not all schools have the completeness of the practicum, especially those in rural areas of central Sulawesi (Indonesia).…”