A pencil A pencil with an eraser An eraser
There is a piece of rubber on one end of it. We can use this pencil toand pencil marks from paper. write erase
Reading Hyman Lippman, a painter, often had troublefinding his eraser. When he finally foundhis eraser, he could not find his pencil. But there were times when he found his pencil; he just couldn’t find his eraser. In order to solve this problem, he invented a pencil with an eraser on one end of it.
A . had trouble: had problems e.g. She had trouble using chopsticks.
a. They had trouble moving the table. b. She had trouble speaking English.
c. playing the piano. She had trouble d. He had trouble riding a bicycle.
“find” B. found: the past tense of -to discover someone or something that was lost. A: He founda dog.
C.solve: to find a solution to something that is causing difficulties. He can’t solvethe math question.
D. invent: to make something for the first time. vocabulary deaf 聾的 a hearing aid 助聽器 A.G. Bell Alexander Graham Bell invented the telephone.
Fill in the chart of the Reading Who? Hyman Lippman. (A painter) He had trouble finding his eraser and pencil. What problem? He invented a pencil with an eraser on one end of it. or (He added an eraser to a pencil.) The solution?
Questions: (1)Was Hyman Lippman he a careful person? (2) Was his invention very creative? (3) Are there any other way to solve his problem? Answers: (1)No, he wasn’t. Because he often had trouble finding his pencil and eraser. (2)Yes, it was very creative. (3) Group work
Think! Are there any other ways to solve his problem? writing drawing
wheels shoes skating shoes
If you addAtoB, you getC. e.g. If you add wheels to shoes, you get skating shoes. + = e.g. If you add an eraser to a pencil, you get a pencil with an eraser. + =
Group work Discuss and find out how products were invented.
= + = + = + = +
cola ice cream
lollipop candy stick
Assignment Compare the two inventors, Willis Carrier and Liu Xing-ching, and their inventions. Air conditioner invented in 1902. To make the air in a room, car etc. stay cool. Collectable water umbrella invented in 1972. To avoid rainwater to wet the house
Answer the following questions. e.g. Which is more complex, the air conditioner or the collectable water umbrella? The air conditioner is more complex(than the collectable water umbrella) 1. Which invention is better, the air conditioner or the collectable water umbrella? Why? __________________________________________________ 2. Which is the more useful of the two? __________________________________________________ 3. Which is more important to you, the air conditioner or the collectable umbrella? Why? ________________________________________________________