Children's (ages 9 to 12) writing prompt

Grandparent's Unfinished Diary

You find an old diary in your attic that belonged to your grandparent when they were your age. The diary entries stop abruptly with a mystery that was never solved. Armed with your wits and the diary, you decide to solve the mystery that puzzled your grandparent decades ago.

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. Keep it to one problem and one place.
  2. Let the child solve the problem, not a grown-up.
  3. Name the feeling the character has, simply and honestly.

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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