Children's (ages 9 to 12) writing prompt

The Missing Treehouse

Invent a story about a secret agency run by children who can talk to animals. Their mission is to solve mysteries around town with the help of their animal friends. Their first big case: The Mystery of the Missing Treehouse.

Suggested length: A middle grade story: 2,000 to 5,000 words

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Three ways to take this prompt somewhere nobody else will.

  1. Give every page or scene one picture worth drawing.
  2. Use one silly sound word kids will want to say.
  3. Use a repeated line young readers can join in on.

Writing middle grade books

Ages 8 to 12: friendship, family and figuring out who you are.

Middle grade novels are written for readers around 8 to 12, with heroes usually 10 to 13. The stakes are huge to the characters, the focus stays on their world, and any romance stops at a crush.

What readers expect

  • A hero aged about 10 to 13
  • Family, friends and school
  • Humor and heart
  • Hope, even in hard stories

A tip before you start

Kids read up. Make your hero as old as your oldest readers, or a little older.

More about middle grade in our book genres guide

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