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Inventors and inventions. Alexander Graham Bell Class 3. Inventor of the Telephone. Alexander Graham Bell was born in Scotland in 1847. He moved to Canada with his parents in 1870. As a young man he worked as a teacher, teaching deaf children to speak.
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Inventors and inventions Alexander Graham Bell Class 3
Inventor of the Telephone • Alexander Graham Bell was born in Scotland in 1847. He moved to Canada with his parents in 1870. • As a young man he worked as a teacher, teaching deaf children to speak. • Throughout his life he was interested in how things worked and was always inventing things.
The Telephone • We looked at how the telephone works. • Class 3 also used a tin can telephone to investigate whether the length of the string affected the sound travelling along it.
Tetrahedrons Bell was very interested in the structure of tetrahedrons and used them a lot in his inventions. Class 3 were challenged to make 4 triangles from 6 sticks. A tetrahedron was the solution.
Kites Bell was also very interested in flying and made lots of kites. He used his ideas about tetrahedrons and incorporated them in his kite designs. Class 3 made 2 kites constructed from tetrahedrons.
Kites 2 We took our kites out onto the field to try and fly them. Just like Mr. Bell our kites need more work before they fly properly!
The Silver Dart When Bell’s kites started getting bigger and flying better, he turned his mind to inventing aeroplanes. His most successful one was called the Silver Dart. This plane first flew in February 1909, and took off from a frozen lake in Nova Scotia, Canada. Class 3 recreated the scene in a big picture.
