259 research outputs found
Comparing Open and Guided Inquiry Activities in an Informal Physics Program To Promote Agency, Communication, and Reasoning
No full textIn this thesis, we investigate an informal after-school science program. We examine two inquiry curricula used in this program; one more guided and the other more open. We have developed new methods to analyze middle school children's scientific notebooks, and we measure how the children exhibit agency, how the children communicate, and the mechanistic reasoning children use. We compare the two curricula and find that the children exhibit more agency in the open curriculum, write and draw more in the open curriculum, demonstrate a wide variety of scientific communication, and use more varied types of mechanistic reasoning in the open curriculum. These aspects can be linked to science identity, and we conclude that the more open curriculum supports the development of positive science identity
Atrito
No full textSimulação interativa em Flash que permite ao usuário atritar dois materiais e observar o comportamento microscópico das partículas componentesEnsino Médio::Físic
Sonda Lunar
No full textMovimento em duas dimensões, gravidade, pressão, vetores, massa , leis de Newton , forçaIdentificar a variação da força com a direção e sentido do vetor velocidade e alteração ocorridas pelo efeito da gravidadeComponente Curricular::Ensino Médio::Físic
Charges and fields
No full textConceitos básicos de campo elétrico, atração e repulsão de cargasDemonstra, através de vetores, o campo elétrico na presença de uma ou mais cargas (positiva ou negativa). Mostra, também, o valor do campo e a distância medida do ponto até a carga. Fornece a voltagem das cargas e as equipotenciaisComponente Curricular::Ensino Médio::Físic
Ótica geométrica
No full textEnsino Médio::FísicaSimulação interativa bidimensional em Flash que gera imagens de objetos ou fontes luminosas posicionados a uma distância finita de uma lente convergente, sendo as características da lente (diâmetro, curvatura e índice de refração), sua posição e a do objeto ajustáveis pelo usuári
Cargas e campos
No full textBasic concepts of electric field, attraction and repulsion of chargesIt demonstrates, through vectors, the electric field in the presence of one or more charges (positive or negative). It shows the value of the field and the distance measured from the point with respect to the charge. It provides the voltage of the charges and also provides the equipotencialComponente Curricular::Ensino Médio::Físic
Atrito
No full textSimulação interativa em Flash que permite ao usuário atritar dois materiais e observar o comportamento microscópico das partículas componentesEnsino Médio::Físic
Lei de Faraday
No full textSimulação interativa na qual o usuário pode movimentar um ímã na vizinhança de uma bobina conectada a uma lâmpada e a um voltímetro e verificar os fenômenos associadosEnsino Médio::Físic
Perspectives in Quantum Physics: Epistemological, Ontological and Pedagogical
No full textA common learning goal for modern physics instructors is for students to recognize a difference between the experimental uncertainty of classical physics and the fundamental uncertainty of quantum mechanics. Our studies suggest this notoriously difficult task may be frustrated by the intuitively realist perspectives of introductory students, and a lack of ontological flexibility in their conceptions of light and matter. We have developed a framework for understanding and characterizing student perspectives on the physical interpretation of quantum mechanics, and demonstrate the differential impact on student thinking of the myriad ways instructors approach interpretive themes in their introductory courses. Like expert physicists, students interpret quantum phenomena differently, and these interpretations are significantly influenced by their overall stances on questions central to the so-called measurement problem: Is the wave function physically real, or simply a mathematical tool? Is the collapse of the wave function an ad hoc rule, or a physical transition not described by any equation? Does an electron, being a form of matter, exist as a localized particle at all times? These questions, which are of personal and academic interest to our students, are largely only superficially addressed in our introductory courses, often for fear of opening a Pandora's Box of student questions, none of which have easy answers. We show how a transformed modern physics curriculum (recently implemented at the University of Colorado) may positively impact student perspectives on indeterminacy and wave-particle duality, by making questions of classical and quantum reality a central theme of our course, but also by making the beliefs of our students, and not just those of scientists, an explicit topic of discussion
Massas e molas
No full textSimulação interativa em que corpos de massa conhecida podem ser pendurados em molas de constantes elásticas diferentes, podendo-se medir as deformações e os períodos de oscilação das molas, que podem apresentar ou não efeitos dissipativosEnsino Médio::Físic
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