Also on these boards
Very hungry caterpillar
These look like bookmarks. If your book is longer than you can read in one sitting and need a bookmark, then you're probably at least in third grade. And if you don't know what one-half or one-fifth is by then, perhaps you should go back to third grade.
For kindergarten and 1st grade - 10 math journal prompts and addition facts game with a Cinco de Mayo theme.
For 2nd grade - Are your students bored of doing the same old math problems? Try this book that has unique types of math puzzles. All puzzles are Common Core Aligned for the second grade. $