http://picjrintelpucsp.blogspot.com/ Development of experimental activities in Physics using Classmate PCs Junior Scientific Initiation at PUC/SP and The Advanced school of Science and Technology Marcelo Damy

Contextualization: 20th Century - Marked by a big technology revolution. In spite of a larger access to technology, to understand it "How things work" is needed Now it's telling us to read the bar codes One narrow, one narrow, one wide, one narrow, one very narrow, one blank one, one very wide...

The market demands professionals with capacity to accomplish diagnoses, solve problems, of make decisions, to face situations of changes It is necessary to be agile, theoretical and practical abilities.

A rejection from most youth, to the careers on the hard sciences area. A world problem! Table 1 – seek and offer of vacancies and courses, in the 90's, by area of knowledge; percentile data, except when suitable

The school needs to guarantee the scientific formation of our youth. "The way that the human intelligence works happens in building knowledge for the activity and the interactivity.” We need to explore the open possibilities for the technological reality. Léa Fagundes Cognitive Studies laboratory at UFRGS We need to rethink the Teaching and Learning of Sciences in a way to integrate the student to the contemporary reality. It is necessary to wake our youths' interest

Initiatives like the One Laptop per Child (OLPC) ( UCA Project in Brasil) seeks to insert a new methodology of Teaching and Learning, centered in the student and centered in the development of projects

Project's Objectives and Final product Objective: Development of resources and methods that allow to use Classmate PCs as teaching instrument and learning for content generation and experimentation in Physics laboratories. Final Product 1. Replicable method of developing content to use technology 1:1 in education 2. Lesson plans to use in the classroom

How the resources are developed. click to access a Lesson Plan

Theoretical foundations Construcionism is a theoretical reconstruction starting from Piaget‘s constructivism, done by Seymour Papert (1994). The quest of the construcionism is to reach strong learning means to value the individual's mental construction, leaning in their own constructions of the world. To establish connections among the new and what is known to have a meaning. It is to respect each individual's time Seymour Papert

Methodology and work stages

Pedagogic Gain

Experimental Technique Work in progress in GoPEF of PUC/SP since the mid 90's that gave origin to a variety of extension Workshops for teachers. Extension workshops by Cogeae/PUC/SP

Why use the microphone entrance Software utilizado audacity (download)

Projects developed in 2009 Click on the links to access each project's blog Sound Spectrum Wireless transmission Determination of the electrical net frequency Free fall with a photo sensor Waves in cords Fall of a magnet in reels

Projects' summary

Using sound analysis software different sound spectra are studied and the speed of sound is determined Sound Spectrum Prof. Alessandro Washington Daniel (E.E. José Chaluppe) Click to have access to the lesson plan In addition to the understanding of many musical instruments the project allows an interesting interface with the understanding of the basic principles of the physiology of speech. Work presentation during the workshop in the Academic week at PUC/SP (click to watch the video) Link for vídeo Inglês

Wireless transmission Prof. Orivaldo Gonçalves de Mello (E.E. Pe Simon Switzar) This experiment allows us to detect coming signals of remote control through photo sensors connected directly to the microphone entrance, identifying their codes. Click to have access to the lesson plan An interesting application is in the infrared detection camera, as for instance the existent ones in the Microsoft "Natal project", A new way of interacting with computers. work presentation during the workshop in the Academic week at (click to watch the video)

Determination of the electric net frequency Prof. Prof Júlio Lamon (ENSG/SP) This project consists of observing in an indirect way the oscillation frequency of the electric net. For that a photo sensor connected to the microphone entrance captures through the alteration of light intensity emitted by a light bulb fed by a signal originated in the electric net Click to have access to the lesson plan A light bulb fed with an alternate signal will have its brightness oscillating with a frequency that corresponds to the double of the electrical net frequency. See the animation in the blog. This opens a good discussion concerning the time for cerebral answer and the resolutions of the sound board of PCs. Work presentation during the workshop in the Academic week at (click to watch the video)

Free fall with a photo sensor Prof. Roger Willians Corrêa (E.E. Profa. Alayde Domingues Couto Macedo) In this experiment a ruler with previous established demarcations is thrown between a photo sensor and a laser pointer, interrupting the passage of electric current. The pulses are visualized in a sound analysis software. Click to have access to the lesson plan From the observed signal and with the distance values known from the ruler it is possible to build a position over time graph and obtain the value for acceleration of fall of the ruler. An interesting application of this project is the understanding presence photoelectric sensors as for instance the existing ones in elevators' doors. Work presentation during the workshop in the Academic week at (click to watch the video)

Waves in cords Ethel Mazur Camargo Lopes Lima (E.E. José Chaluppe) In this project differently from the others used the audio exit of the classmate PC. A free software allows us to generate signals of known frequency and stationary waves in a cord bound on both extremities are observed. Click to have access to the lesson plan We can verify the resonance phenomenon,determine the speed of propagation of the cords, for different outline conditions. Among countless applications of this phenomenon there is the microwave oven that generates stationary waves in its interior. Work presentation during the workshop in the Academic week at (click to watch the video)

Fall of a magnet in reels Profa.Rossana Leandro (E.E José Chaluppe) In this project a magnet is thrown inside connected reels inseries and the signal is observed through the microphone entrance. The time instants of passage of the magnet through each surbase can be determined in the audacity software. Click to have access to the lesson plan Important applications as the generation of energy can be understood through this experiment and discussions concerning current generation of wireless energy systems can be discussed also and naturally discussions on the sustainability and alternative forms of energy generation, a theme of extreme relevance nowadays. Work presentation during the workshop in the Academic week at (click to watch the video)

The backstage............ Hands on

Watch in the following video one hands on day in a physics laboratory workshop at PUC/SP