Here's another idea that will add some spice to your homeschool adventure!  (My mother originated this tradition in our family!  She'd put them in our lunch bags on Valentine's Day!  THANKS MOM!)

Valentine's Day Cookies!  Roll out your favorite sugar cookie recipe.  Then cut out a BIG heart shape about three to six inches wide from a piece of paper!  Using the pattern as a guide, lay down the paper heart on the cookie dough and cut around it with a sharp paring knife.  Make some tiny hearts with a cookie cutter.  Bake them all!  When it is time to frost the cookies, start with the large cookies and then put the tiny cookies on top for a layered look.  Add heart sprinkles or other colored frostings for pizzazz or try M & Ms!  After the decorating is done, wrap the Valentine cookies in plastic wrap and have your kids deliver them to neighbors and friends.  One year we brought them to some friends in the nursing home and every cookie 'greeting' was received with a SMILE!