The reading passage says good stories have three main parts. What is the job of the 'beginning' part of a story?

The beginning tells who is in your story and where they are. It sets the scene.

Imagine a character named Sam is at the beach. Write one sentence that shows what Sam *thinks* in his head.

Sam thought, 'I wish I could build a sandcastle as tall as a house!'

Maya felt so happy when she finally found her teddy bear under the bed. She hugged it tight and said, 'I missed you so much, Teddy!'

I can write a story with a beginning, middle, and end, that shows what characters see, think, feel, and say.

1
Good stories have three main parts: a beginning, a middle, and an end.
2
The beginning of a story tells who is in your story and where they are, and the middle tells what happens next.
3
To make your story exciting and real, think about what your characters see, think, feel, and say.