Yuna went to the park on a sunny day. She saw a dark shape on the ground next to her. When she moved her arms, the shape moved too. It was her shadow.
Light from the sun goes in straight lines. Her body can block the light. So a dark shadow forms behind her. A shadow is always on the side away from the light.
In the morning, the sun was low, and her shadow was long and thin. At noon, the sun was high in the sky, so her shadow was short. Yuna jumped on it and laughed.
That evening, Dad shined a flashlight on the wall. Yuna held up her hands in front of the light and made the shape of a rabbit. A rabbit shadow hopped on the wall.
Then she moved her hands close to the light. The rabbit shadow got bigger. When she moved them near the wall, it got smaller. Yuna wants to play with shadows every night.