The Seesaw Puzzle: Who Sits Where?
Omar and his little sister Pia ran to the seesaw. Omar sat on one end. Pia sat on the other. Down went Omar, and up went Pia, high in the air. She could not get back down!
"This is not fun," said Pia. Omar was bigger, and his weight pushed his end to the ground.
Their teacher, Ms. Reyes, came over with an idea. "A seesaw turns on a center point," she said. "Try moving closer to it, Omar."
Omar slid his seat toward the middle. Slowly, the board started to level out. When Omar sat just a little way from the center and Pia stayed at the far end, the seesaw was balanced. Pia's feet touched the ground, and then Omar's did too, taking turns.
"A heavy person close to the middle can balance a light person far from it," Ms. Reyes explained. "Distance from the center matters as much as weight."
Pia laughed as she bounced up. Now the seesaw was fun for both of them.