Use of overhead projector in teaching

Employees

August 29, 2013 – 10:10

Teaching 2 and 3 Year Olds: Eggs on the Overhead Projector

employees TRAINING

The first phase of the work consists in a training session aimed at teachers of the school complex Peyron - Fermi. This intervention, lasting four hours, to be held at the headquarters of MRSN, aims to offer teachers ideas for the use of the science lab, using educational materials for the purpose of easy availability and low cost (overhead, soap , birdshot, stoppers, plastic bottles etc ...). The aim is to reconnect the science teachers at the lab, always present in schools but less and less used by teachers to help them reorganize not only the physical space but also programs in order to make the lab work not a moment episodic, but an integral part of the curriculum.

The museum experience in the field of educational research allows us to propose concrete activities to be implemented in a time frame compatible with the schedules and school programming, capable of educating the boys to the practical work, to accustom them to test their knowledge for their preparation, to exercise their compare and discuss the results of working in small groups.

The proposed activities, ranging physics to chemistry, natural science, they do not need from teachers in-depth knowledge of the various disciplines that make up the area of the experimental sciences, but a core competency provided enhanced by powers of observation and imagination .

The use of simple overhead projector, for example, after detecting the measurements of a real object and its image reproduced variatane and the distance from the fixed point (the wall), you can make considerations on the magnification and the focal ratio, the same board can be used as a base for a container with water and a little detergent, blowing on which, with a very thin straw, it allows the ascent of bubbles, magnified by the overhead projector and projected onto the screen, simulating the regular arrangement of atoms in a crystal.

A similar experience can be carried out using a watch glass of considerable size, and placing it on its side: pouring of steel balls (they go very well shot) and shaking slightly will have a model of the regular arrangement of atoms in a crystal. The same spheres or pellets can be put in a flat box transparent (container for cd). Once the disposal of the "atoms" can support the corresponding polished crystal in order to highlight the similarities.

The formation of beautiful crystals can be observed by placing in a saucer with water a few pinches of Sololo (phenyl salicylate), an ancient non-toxic disinfectant of the urinary tract, and bringing it to a merger with a simple infrared lamp or by the radiator (its point Melting is relatively low 39 °), thus making the exercise not dangerous and easy to swing.

Numerous properties of minerals including the birefringence, generally observable through the use of the microscope by mineralogist with polarized filters, are easily detected using a foil of a mineral such as muscovite, placed between two thin sheets of membrane polaroid (go well the old Sunglasses with polarized lenses) lying on the overhead projector.

The thermal conductivity can be understood by combining the lips a sphere of quartz and a glass: the temperature difference easily detectable (quartz is colder) indicates the best conductivity of the glass.

As part of the geological sciences, the stratification of the Earth can be detected using balls of different materials (wood, glass, steel) which is proportional to the density of the crust, mantle, and core. Shaking marbles in a container will arrange themselves in layers according to the different weight.

Source: www5.indire.it

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Church Dictionary 2

Original Sin - A bad deed that no one else has thought of. There are few of these anymore since most bad things have been tried over the history of humanity. If you come up with an original sin, you should consider patenting it.
Overhead Projector - A teaching aid which has become a great labour-saving device. It takes material which is clear and transparent and then ensures that it goes over everyone's head. Theologians used to take years to learn to do this.
Pall Bearer - St. Paul's mother.
Pew - Ancient device of torture, developed to make people wish they had to stand through worship, as in early centuries

Home / Community, News / Citizens get answers on water transfer, Nov. 5 bond ..  — Monitor Online
City staff used an overhead projector to display an analysis of current and projected water bills for the audience to see, and copies of the analysis were distributed to the audience afterwards.

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  • Avatar (ƸӜƷ) Will change in sitting position affect the speed of riding the bicycle, What practical canbe done to prove it?
    May 04, 2008 by (ƸӜƷ) | Posted in Physics

    I have done a survey and over 80% responded yes to the above question. In order to prove it, I need to use physics to prove it.

    I just want to know if you have any safe and suitable ideas which can allow students of the class to experiment this. I need to know the design of the experiment, variables, procedure and how and what will the graphs be?

    Thanking You

    • The most obvious way to increase speed would be to decrease air resistance- duck your head behind the wind shield , tuck you elbows in to your sides. As far as gravitational forces, your seating position would not change …cts for acceleration with different designs that reflect good and bad wind resistance. I know- set up a car racing track and attach different bonnets to the front of either car on the track and have them race each other.