A ascensão e queda da teoria do calórico
The aim of this paper is to make a historical analysis of the appearance of the caloric theory, its explanatory power and its decline. Unlike many texts disclose, we will show that Joseph Black was not the first to investigate the heat as a substance and that the experiments of Benjamin Thompson (Count Rumford) were not crucial to the abandonment of this theory. The explanatory power of the caloric will be shown by analysis of extracts from the book of dissemination of Science authored by Janet Marcet. We believe that the knowledge of these facts will help to better understand the origin of many terms that we use in the study of the calorimetry, besides alerting teachers and students of the historical claims errors found in textbooks.
Preconcepciones sobre el calor en 2º de BUP
SUMMARY There are some ill ways of designating concepts and processes, in both the textbooks and the language we, tea- chers of Physics and Chemistry, commonly use in our lessons. This is an obstacle to attain our aims. Furthermore, we do not usually take into account in our educational practice, the alternative frameworks our students have, which makes our ((teaching productivity» alarmingly low in the scientific field. Such situation is analysed in this report, and some suggestions for classroom practice and science teaching are offered. 1. INTRODUCCION
A Study on Technology Embedded English Classes Using QR Codes
The development of information and technology has brought plenty of changes to the educational environment. The prevalence of smart phones is particularly playing a huge role in shaping learning methods. Smart phones provide the opportunity to scan QR codes, which can greatly ease access to information. Due to a high recognition speed, recognition rate, and restoration rate, they can be useful tools for English teachers to use in their class. In this study, we suggest using QR codes for writing and picture descriptions. Based on this study, more research should invest in Technology Embedded English teaching models to create better English classes for students.