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Science Models
ABSTRACT
This activity was developed for 9th graders to help them to understand how do scientists devise scientific models. To accomplish the activity the students will play the role of scientists that discovered a box with an unidentifiable object inside. The goal is: they have to devise a model of the object's form without opening the box. This is, of couse, a simplification of scientific work; therefore the teacher will make a presentation, at the end of the class, talking about a real work developed by sicentists to devise a science model (for example: the development of atomic theory; or the development of DNA theory).
Activity 1 – What is inside the box?
Material: - a box for each group of students, it can be made by EVA paper.
(There must be a hole in one of the box’s walls whereby the students can stick one finger and fell the object’s texture. The hole cannot be too big, otherwise somebody could see the object, and screw up the role of the class)
- an object, for each box, unknown by the students;
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| [Here is an example of a box, made by EVA paper, and an object - at the right - made by the teacher for the activity] |
1) In this activity the students, divided in groups, will receive the box with the object inside of it. They have to analyze the box without opening it, and try to draw a model that represents the object inside it. It’s expected the students be able to identify useful information – the movement of the object when shaking the box, the object’s texture, etc. – to imagine and draw a model that represents the object.
2) After completed the activity 1, the students have to present their models for the whole class, defending their work by exposing the information they used to build their model.
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3) At the end the teacher open the boxes to show the objects for the students, comparing the objects with the models they created.
Activity 1 – Part 2
Activity 1 – Part 1
The students will play the role of scientists that have discovered a box with an object inside. To understand what the role of the object is, how it works in natural environment, it’s important to know the form, the shape, of it. By knowing its form the scientists can make predictions about the natural object’s operation. Therefore, the students will have to find ways to discover the object’s form. The teacher can’t give any help for them; they have to do it by themselves.
Imagine that many years have passed since they devise the first model, and the scientists have developed a new engineering enabling them to make a hole in one side of the box. This technology enables them to put one finger inside the box, thus they can feel the texture of the object, but it doesn’t enable them to see inside the box through the hole. Once again the students will have to use the new information they discovered to draw a new model.
Activity 2 – How do scientists devise science models?
Activity’s goal: Remembering the activity 1, the teacher and the students will talk about some real scientific models, like atom and DNA for example - how the scientists devised them.
Activity 2 – How do scientists devise science models?
Activity’s goal: Remembering the activity 1, the teacher and the students will talk about some real scientific models, like atom and DNA for example - how the scientists devised them.
fontes:
[1] http://www.attentional-fitness.com/strategies/the-atomic-components-of-narrative-elements.html
[2] http://br.freepik.com/vetores-gratis/dna-strand_333999.htm
[3] http://gartic.uol.com.br/marcim20/desenho-jogo/cientista
[3] http://gartic.uol.com.br/marcim20/desenho-jogo/cientista
