Levelled Reading: Levels L-O
Grade 3 · Reading · On Level · Worksheet 1
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The Robot That Spun
Marcus and his robotics club had three weeks before the city contest. Their robot had one job. It had to pick up a block and carry it across a table.
The robot rolled straight with no trouble. But every time it tried to turn, it spun in a circle instead.
Marcus checked the wires first. They all looked fine. His teammate Dana said, "Maybe it's the code." They read the turning code line by line. It looked right too.
Then Marcus knelt down and looked closely at the wheels. The left wheel was a little smaller than the right one. "That's it!" he said. "A smaller wheel turns differently. That is why it spins."
The club ordered a new wheel. While they waited, Marcus slowed down the left wheel in the code. The turns got better, but they were still wobbly. When the new wheel came, they put it on. The robot turned in a smooth curve.
At the contest, the robot carried its block without one mistake. A judge asked how they fixed the turning problem. Marcus explained about the wheel. "We tested one thing at a time," he said. "Guessing would not have found it."
The judge smiled. "That is how real engineers work," she said. Marcus grinned at Dana. All that careful checking had been worth it.
What is this story mostly about?
What was the robot's problem?
What did Marcus check first?
Why did the robot spin instead of turn?
Why did Marcus change the code while they waited?
What happened after the new wheel arrived?
Which of these did NOT happen in the story?
What does the word "wobbly" mean in this story?
What lesson does Marcus learn?
How does Marcus feel at the end?



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