My students love this center activity! This particular set focuses on comma usage in Friendly Letters and commas in a series. Simply, cut apart and tape a square to each side of a tall Kleenex box. (Tip: Cover the whole square in clear packing tape for durability!) The students can work alone or in small groups to edit each square. They love to roll the box like a die! Included are a recording sheet for the students and an answer key.