What are Molly Lynch's most popular classroom journal ideas?

Molly Lynch has shared a great idea for classroom journals that seems to be quite popular. She suggests creating Shared Classroom Journals. These are composition books with a label on the front indicating the topic. Students are free to pick up any journal and write about the topic on the front. They're encouraged to write their name and date, but it's not always enforced. The journals are kept in a basket on the Daily 5 bookshelf and students can grab any journal at any time. It's a fun way to mix up the writing routine and allows students to share their ideas with their classmates.

Would you like more details on how to set up these Shared Classroom Journals?