Designing Improvised Innovative Low cost Science Teaching Learning Aids.
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Designing Improvised Innovative Low cost Science Teaching Learning Aids.
Innovative designing of low cost make and break apparatus made of used and thrown away materials.
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The Joy of Learning at SMUS: Grade 4

In this episode, teachers Jane Rees and Heather Sandquist talk about the project-based habitat unit they guide their Grade 4 classes through. Within the fram...
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To demonstrate that CO2 is heavier than air.

To demonstrate that CO2 is heavier than air. | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

This is a low cost innovative science learning aid.The children enjoy doing this experiment.With the help this they can easily demonstrate the property of carbon di oxide.

 Two candels, one longer and one shorter,are fixed to inside botom of a small plastic dish 2 inches apart.A Small amount of lemon salt and a table spoon of baking soda(SODIUM BI CARBONATE) are placed in the container. Now the candles are lighted. Water is added in the container with the help of a dropper.Soon the reaction starts and CO2 is released. The flame of the shorter candle is put off.But the longer candle keeps glowing. CO2 prevails at the bottom of the dish displacing the air at the boyyomas it is heavir.So CO2 does not rise to the level of the longer candle So it keeps glowing till it is exhausted.

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ABC of Chemistry (kit of low cost improvised experiments)

ABC of Chemistry (kit of low cost improvised experiments) | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

This is a low cost, improvised kit to demonstrate nearly 30 experiments in cemisstry to make learning chemistry interesting and easy for students in and outside the classroom. I designed it using mostly of household chemicals and locally available materials to give it a native touch.Acids&Bases, Boyle"s Law, Candle chemistry and so on and many more simple experiments including Fun Corner appeal to the students to create liking towards science. This proved very useful in rural and urban schools as well. 

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improvised working model to demonstrate conservation of Energy

improvised working model to demonstrate conservation of Energy | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

Through this model,how one form of energy can be transformed into other forms of energy,(Law of conservation of energy) can be learnt without much difficulty.

In this model a thin wooden board is fixed at right angle to the base stand.A 6v bulb, a small piece of nichrome wire,a 6v toy motor with plastic fan blades, an iron bolt with several windings insulated copper wire (electro magnet) and two metal washers,one of copper,the other of iron washer connected to the terminals,placed in plastic bottle voltameter with copper sulphate solution.These are connected in parallel via ear phone sockets. The terminals are connected to a 2A battery eliminator ranging from 1.5v to 12v.If we insert a ear phone pin in to the sockets one after the other we notice the bulb glowing,the nichrome wire turning red hot,the fan blades rotating, the iron bolt attracting  small iron nails and electroplating.

Mallepaddi Siva Rama Prasad's insight:

Through this model students can learn how electricity can be trans formed into light energy,heat energy,mechanicalenergy and chemical energy.

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Demonstration of standing wave in a string

Demonstration of standing wave in a string | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

In this improvised apparatus a 6v DC motor is taken and a small pulley is fixed to its shaft.A card board is cut in oval shape and fixed to the pulley at its centre.A small piece of of a plastic tongue cleaner isattached to one side of the motor.A piece of string is tied  to the free end of the tongue cleaner.When the motor runs,the ovl shaped cardboard makes the tongue cleaner vibrate to produce a stationery wave in the string.One can clearly observe the loops,nodes and antinodes of the standing wave in the string.

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Resistance- Series,Parallel.

Resistance-  Series,Parallel. | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

This can be best used to learn about resultant resistance when two or three individual resistances are connected in series or in parrel.It can be shown that the ,in series the R = R1+ R2+R3 AND 1/R =1/R1+ 1/R2 +1/R3, when connected in parallel. By the glow of bulbs it will be indicative that in series the total resistance will be more and in parallel it will be less.  

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Mini Fire extinguisher(water jet)

Mini Fire extinguisher(water jet) | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

This is a low cost simplified version of a miniature fire extinguisher with water jet.With this children can understand how a gas produced with increased pressure inside the bottle, pushes the water,which is already present, out of the bottle with frce like a jet.

 

       For this a glass bottle of medium size, a single holed rubber stopper that fits to the mouth of the bottle.Through the hole of the stopper,a small hard plastic tube is iserted tightly.To the upper end of the tube a short syringe needle is fixed somewhat tightly.1/4 of the bottle is filled with water.

Mallepaddi Siva Rama Prasad's insight:

To produce gas within the bottle,I opted for two household chemicals 1) Sodium citrate,commonly known as  'Lemon salt'  2) Sodium bi carbonate,commnly called 'eating soda'.Sodium bi carbonate is dissolved in the water present in the bottle.I took another small plastic cotainer that can be inserted in to the bottle through its mouth freely. I tied a thread to it and filled it with lemon salt solution (lemon salt+water) oherwise called citric acid. I slowly descended the the small container into the botle.The container in the bottle should not be in contact with sodium carbonate solution.I put the put the rubber stopper securely to the mouth of the bottle.To start the reaction the two solutions present in the bottle are to be mixed by tilting the bottle. Due to the reaction Co2(Carbon di oxide)is produced inside the bottle.As the pressure inside the bottle increases the water is pushed out like a jet through the syringe needle.

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Enjoy the phenomena of Total Internal Reflection of a Light ray in a bottle.

Enjoy the phenomena of Total Internal Reflection of a Light ray in a bottle. | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

Explaining the phenomena of total internal reflection of light to high school science students seem to be abstract without a proper teaching aid.When a light ray travels from one medium(denser)to another medium (rarer) it either refracts or reflects depending on the criticle angle of the first medium.

Mallepaddi Siva Rama Prasad's insight:

For this I took a medium size flat glass bottle.3/4th of it is filled with water.2-3 drops liquid soap is added to the water to make it slightly clowdy and to act as a dispersion medium for the passing light ray.A beam of light is flashed from a semi conductor laser torch on the sides of the glass bottle.When the light ray is flashed from a certain angle, I observed the reflection instead of refraction.Our students enjoyed this very much and many of them tried this on their own.

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Easy preparation and collection of some Gases in classroom while teaching the topic

Easy preparation and collection of some Gases in classroom while teaching the topic | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

 Learning byDoing:

 I designed this improvised simple gas collecton kit for proper understanding of procedure of classroom preparation some gases like Oxygen and Hydrogen which can be collected on water and to test their properties without any fear of cost or breakage.This is so simple that the students themselves can make them for the joy of learning science.


Via Ana Cristina Pratas
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Students Learning Science in Remote Himlayan Village in Nepal

Shout out to Ballard High School in Seattle from the Himlayas. I made this video to connect American high school science students with what learning science ...
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The factors that influence the resistance of a conductor

The factors that influence the resistance of a conductor | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

This is a low cost improvised science teaching learning aid to demonstrate that resistance of a conductor depends on some factors such as the length,cross sectional area,nature of the material of the conductor and temperature.An insulated wire,a copper wire,a flat nichrome wire and a round nichrome wire of the same length are taken.An iron spring that withstands temperature is also connected to a 6v bulb in the circuit.The intensity of the glow of the bulb indicates the variation in the resistance .

Mallepaddi Siva Rama Prasad's insight:

I designed this to show that the resistance of a conductor is directly proportional to its length,inversely proportional to its cross sectional area,the nature of the substance of which the conductor is made and inversely proportional to the temperature while teaching the concept in classroom.

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Improvised 3-in-1 cup

Improvised 3-in-1 cup | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

This is a low cost improvised apparatus to teach and learn three science concepts in class room teaching.They are

1)Water Voltameter (electrolysis of water)

2) Conductivity Apparatus

3) Copper Voltameter

    (electroplating)

Mallepaddi Siva Rama Prasad's insight:

To a polystyrene empty ice crem cup, a plastic lid of a wide mouthed glass bottle is arranged as a base.Two holes are made at the bottom of the cup.  two carbon rods are removed from used up pen size dry cells and are inserted through holes as electrodes to which connectors are attached.With the help of few attachments this can be used to demonstrate that water is made up of Oxygen and Hydrogen,to identify Ionic solutions and electroplating.

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Balancing the un balanced

Balancing the un balanced | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it
Mallepaddi Siva Rama Prasad's insight:

 Try to keep the pipe standing on its slanted base balancing it with two water bottles.

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Kristine Tutanes's curator insight, December 4, 2013 4:35 AM

like it kindly send complete info pls....

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Kinetic and Potential Energy

Animation added to the song "Kinetic and Potential Energy" by Tom Glazer and Dottie Evans from the Singing Science Records...


Via Neal Cronkite
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Simple Galvanoscope (improvised)

Simple Galvanoscope (improvised) | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

This can be used to demonstrate the working principle of a Galvanoscope while teaching Electricity in class room.This is a device to detect whether electricity is flowing through a circuit or a conductor or not.

Mallepaddi Siva Rama Prasad's insight:

In designing this I used a plastic container lid as a base.I took an insulated motor winding wire and 20-25 rounds or turns to make a circular coil and fixed it to the base.A sewing needle is magnetised with the help of a permanent magnet and is hung from the upper side of the coil towards to its center with a thread.When the two free ends of the coil are connected to a circuit, the deflectioni the position of  the needle, indicates that electricity is flowing through the circuit in one direction and deflection in opposite direction indicates the flow of electricity is in opposite direction. No deflection in the position of the neele means no flow of electricity.

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Demonstration of working principle of Rheostat in class room teaching in a simple way.

Demonstration of working principle of Rheostat in class room teaching in a simple way. | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

This improvised low cost apparatus made of mostly disposed material is very effective in teaching the working principle of a Rheostat when connected in a circuit.How the flow of electricity in a circuit changes with change in resistance can be  very conveniently explained while teaching the concept.

Mallepaddi Siva Rama Prasad's insight:

Flat nichrome wire from an old electric iron is wound spirally on an empty felt tip pen barrel leaving gaps between the windings with equal spacing.The length of the wire increases or decreases as we move up and down the barrel.A gem clip is used as a slider to go up and down the wire wound barrel.A 6v bulb is connected in the circuit along with a 9v dry cell.As the gem clip is slided up and the barrel one can observe the change in the intensity in the brightness of the bulb.

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Project BEST (Building Excitement for Science and Technology) 2013

Project BEST (Building Excitement for Science and Technology) is a non-profit organization dedicated to providing students with education, enrichment, and a ...
Mallepaddi Siva Rama Prasad's insight:

This is the spirit of teaching and learning science for the child scientists.With hands on activities they acquire first hand knowledge which inspires them to pursue  the field of reseach to become successful scientists who are the wealth of a nation.

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Mini Home Lab for Selflearning.

Mini Home Lab for Selflearning. | Designing Improvised Innovative Low cost Science Teaching Learning Aids. | Scoop.it

A Low cost improvised science teaching and learning kit to learn nearly 30 basic concepts in high scool physics and chemistry by the students themselves.I designed this for the benefit rural schools with the help of my students where I worked.My student R.L. Roja of Z.P.High school,Kodali  exhibited the kit in various  Science Exhibitions,District,State,Southern India and National Levels.

Here two models from our Mini Lab are shown.1) conversion electricity into other forms of energy(Law of conservation of Energy).

2) Preparation and collection of some gases like O2 and H2 in classroom or at home for first hand knowledge in a simple way without any fear of  cost and breakage.

Mallepaddi Siva Rama Prasad's insight:

Gas preparation and collection: I used disposed materials like used up Injection  bottles,rubber caps,saline tubes(iv fluid tubes).plastic bottle caps and a plastic dish(small).used cheap chemical substitutes which are locally available such as Toilet cleaning acid and Zinc from used up dry cells (for the preparation of (Hydrogen) and Manganese di oxide (from used up dry cells) and Hydrogen peroxide(from local pharmacist) in the preparation of Oxygen.   

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