Monday, March 11, 2019


Read the following passage and choose the best answers.


Long ago in France, there was a boy named Rene Descartes. He was very sick, so he often stayed in bed.
One day, Descartes saw a fly on his ceiling. After a few minutes, the fly flew to a different place on the ceiling. Descartes wanted to tell his parents where he saw the fly.
Suddenly, he had an idea. He drew blue lines from left to right on the ceiling. He called them Line 1, Line 2, and Line 3. He drew red lines from top to bottom. They became Line A, Line B, and Line C. When the fly moved, he drew a star in its place. Then he told his parents how the fly had moved. “Mom, it flew from B3 to C1!”
With his smart thinking, Descartes came up with a new way to describe a location on a map. We call it the coordinate plane. We use it to read maps and graphs. Without Descartes, reading maps would not be the same!

1. What is the main idea of this passage?
2. Descartes saw a fly _____ .
3. Descartes wanted to describe a fly’s position to _____ .
4. In red, Descartes drew lines from _____ to _____ .
5. In the last paragraph, what does the word it refer to?

CHECK YOUR SCORE ______________________
Score =

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