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NATURAL SCIENCES

Grade 4

Life and way of living

Module 3

The story of louis braille

This is for those of you who are inquisitive [LO 2.1]:

  • Find out what has been done especially for blind people at the Kirstenbosch Botanical Garden in Cape Town.
  • Your educator will read the story of Louis Braille to the class. Write a short message in Braille to your friend (no more than three words). Use the picture of Braille writing that is given.
  • Try to create Braille writing on a piece of cardboard.

Assessment

LEARNING OUTCOME 2: CONSTRUCTING SCIENCE KNOWLEDGEThe learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

ASSESSMENT STANDARD 2.1: The learner is able to recall significant information.

Memorandum

Kirstenbosch Botanical Garden in Cape Town.

  • Blind people can rub leaves to smell them and to feel the texture
  • There is a rail for them to hold on to and to guide them through the garden.

Plants are identified with notes in Braille, so that they are able to read about them.

The story of Louis Braille

Many years ago, a boy called Louis lived in France with his parents. He was very inquisitive and was interested in everything that happened around him. His father was a saddle maker and made saddles for other people’s horses.

One day Louis took his father’s sharp knife – without his father’s permission – and tried to cut a piece of leather in his father’s workshop. He had never worked with the knife, which slipped and cut into one of his eyes. Within three days both eyes had become infected and shortly afterward he lost his sight. Both eyes were blind.

Louis remained interested in everything that happened around him, but soon discovered how difficult it is to be blind. He had to go to a special school for the blind and found their manner of reading very difficult. Letters were embossed on the pages – they stood out slightly – but it was difficult to read and reading was very slow.

He became determined to find an easier way to read. One day a military officer came to address the children at the school. He spoke to them, about the methods that they used to send messages at night. Louis got the idea to develop an alphabet using six raised dots. This kind of writing is called Braille, and it consists of a code of dots on paper. You read this writing by running your fingers over the raised dots.

Louis eventually became a teacher and taught at the school. He taught all the blind learners to read Braille, of course. This method represents a vast improvement of the technology and blind people are now able to read much more easily than previously and can therefore learn in the same way as normal learners.

Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
tijani
what is titration
John Reply
what is physics
Siyaka Reply
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Jude Reply
Can you compute that for me. Ty
Jude
what is the dimension formula of energy?
David Reply
what is viscosity?
David
what is inorganic
emma Reply
what is chemistry
Youesf Reply
what is inorganic
emma
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
Sahid Reply
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
what's motion
Maurice Reply
what are the types of wave
Maurice
answer
Magreth
progressive wave
Magreth
hello friend how are you
Muhammad Reply
fine, how about you?
Mohammed
hi
Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
yasuo Reply
Who can show me the full solution in this problem?
Reofrir Reply
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Source:  OpenStax, Natural sciences grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11096/1.1
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