Yourself?

For the visually impaired student.

Atoms, molecules and ions

Atoms = glass balls of different sizes
Molecules = glass balls of different sizes stuck together.
Ions = Spherical magnets that attract and repel each other ( idea of charge)

Digestion

Eating food and tracing it as it goes down the food passage.
Hearing the sound of digestion in the tummy.
Understanding digestion as a chemical (saliva, digestive juices etc) as well as kinetic(movement of jaws and stomach) decomposition process.
Means of nutrition

Transport in living things

Feeling pulse and heartbeat
Osmosis tubes
Potato tubers
Diffusion of smell. Use of glass tubing to make scent maze, allows the sniffing of scent at different points as it travels down a tube.
Capillary tubes to show flow of water against gravity. Use of detergents to give soapy feeling.

Sexual Reproduction in human beings???!!!

Issues on Sex??!!

Energy

Flow of heat from hot to cold.
Hand experiments in basins of hot and cold water
Throwing a ball at a wall to show conversion of energy
Lighting a bulb with batteries to show conversion of energy.

Light and Colour

Try to make them feel differences in colour, especially those only mildly visually impaired. Use high intensity lamps to really bask them in colour and hope they can feel it through the skin.
Explain that it can only be seen and not felt.
Light travels in straight lines. Use a laser bouncing through glass prisms to show the point of heat is a straight line, no matter how far you put your finger.
How do you explain colour to someone who doesn't see?
It's a vibration, produced by individual objects by the collision with light. Like how certain objects have certain sounds.

Introducing electricity...
Same with a sighted person except with the physical objects instead of pictures.

Household electricity....
Mainly theory. Show them the meter which ticks. When a heat lamp is switched on, it ticks faster. when it's turned off, the ticking stops.

Interactions.
Show let them feel a mini pool table and the feeling of crashing balls.
Show the sympathetic vibration of a glass when a tone of the right frequency is played to excite it.
Things affect other things.

Changing matter.
Moulding

posted by Downhere. @ 1:13 pm