March Idea Book: March monthly Idea book is 144 pages of activities and blackline patterns that can be copied. It is for K-3ish but some things can be used for upper elementary. The Mailbox March monthly of ideas book: A month of ideas for March grades 1-3. Theme units with across-the-curriculum activities, monthly science, math and writing activities, games and learning centers, highlights for special days, reproducible classroom newsletter, reproducibles and awards and arts and craft ideas.