Mei's Simple Machines
by
Patches the Story Dog
for your 1st Grader
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Mei loved to draw. She drew birds. She drew clouds. She drew her shoes and her lunch box and the cracks in the sidewalk. Mei's sketchbook went everywhere she went.
At recess, Mei sat on her favorite bench. She watched her friends run and play. Then she saw something that made her think. Her friend sat on one end of the seesaw. Another friend pushed down on the other end — and WHOOSH — the first friend went up!
"How did that happen?" Mei whispered. She looked closely. The seesaw was like a long board on a point in the middle. When one side went down, the other side went up. Push down here, lift up there! Mei opened her sketchbook and drew the seesaw. She wrote a word next to it: LEVER.
Then Mei heard a sound — clink, clink, clink. She looked up at the tall flagpole. A teacher was pulling a rope down, and the flag was going up! The rope went over a little wheel at the top of the pole. Pull down on the rope, and the flag goes up. It was like magic — but it wasn't magic at all.
Mei sat down and drew the flagpole and the rope. She drew the little wheel at the top where the rope looped over. She wrote a new word: PULLEY. "A pulley helps you lift things up by pulling down," Mei said to herself. She smiled. She was finding cool stuff everywhere!
Just then, her friend zoomed past pulling a big red wagon. It was full of balls and jump ropes, but her friend pulled it easily across the grass. The wagon had four big, round wheels. The wheels rolled and rolled, and the heavy load moved with just a small pull. Mei's eyes got wide.
Mei drew the wagon and its round wheels. She wrote another word: WHEEL AND AXLE. "Wheels make it easy to move heavy things," Mei said. "You don't have to carry them. You just roll them!" She flipped through her sketchbook. Lever. Pulley. Wheel and Axle. Three simple machines — right here at recess!
RIIING! The bell rang. Recess was over. A teacher brought out a big, heavy box of toys that needed to go back to the classroom. "Can someone help move this?" the teacher asked. Two friends tried to push the box. They pushed and pushed. But the box was SO heavy. It would not budge.
"We can't do it!" one friend said. "It's too heavy!" said another. Mei looked at the big box. Then she looked down at her sketchbook. She flipped to the page with the lever. She flipped to the pulley. She flipped to the wheel and axle. And then — Mei had an idea! A BIG idea!
"We can use simple machines!" Mei said. "First, let's get the wagon. Wheels will help us roll the box!" Her friends brought the big red wagon. They tilted a long board against the wagon like a ramp. "This board is like a lever," Mei explained. "It will help us push the box up." They all pushed together, and the box slid right up the ramp and into the wagon!
But there were three big steps at the door! "Now we need a pulley!" said Mei. They looped a jump rope over a strong hook above the door. One group pulled the rope down while the other group guided the box up the steps. Pull down, lift up — just like the flag! The box went up and through the door. "We did it!" everyone cheered.
Back in the classroom, Mei opened her sketchbook one more time. She drew all her friends working together. She drew the wagon, the ramp, and the rope. Underneath, she wrote: "Simple machines are everywhere. They help us push, pull, lift, and roll. And when we work together, we can move anything!" Mei closed her book and smiled. What a great recess.