4 pages.
Run off the heart pattern on a variety of pastel colors of construction paper, or for more pizzazz, print it off on patterned scrapbook paper that has a plain flip side. Students cut out their heart and then fold it on the dashed lines, creating an envelope! Encourage students to write something inside, or give them a poem or writing prompt. I've included a page of suggestions.
6 pages.
You can simply have children cut on the bold line of their folded paper (they will be amazed to see they have created a whole heart when they unfold it) or you can have children cut the heart and "scrap" paper in half and glue them to another sheet of paper to make a positive-negative reverse piece of art.