The Wobbly Hill and One Round Friend

Zuzu scampered up a grassy hill, chasing a bouncing acorn that refused to stop. “Slow down, snack!” she called.

But instead of an acorn, something smooth and shiny rolled past her—

fast.

It was a perfect circle, round as a full moon. “Whoa! What are you?” Zuzu asked.

“I’m Rollo,” it replied, spinning gently. “I roll everywhere.”

Zuzu’s eyes widened. “You don’t even

have

corners!”

“Nope,” said Rollo. “Just one endless curve.”