Idea for measurement lesson: Sadly, the link where this idea came from is dead, but the idea can be seen well enough from the image. See how many inches long many different people's feet are. In a homeschool, this could be each member of the family--perhaps neighbors and friends if you can convince them to join in! :)
Another pinner said: I add each cat chased 8 mice (ounces). I know it doesn't start with O, but they are small and so are ounces. Plus the kids always think it is so funny that the kingdom/castle becomes infested with mice!---I teach the Big G, but I like the story that goes with it...might help some kiddos!
Measurement: Students place wiggly worms in order according to length. Pre-cut strips of green construction paper in various lengths and have the children pick a piece. They cut out and decorate their worms any way they want. Put them in order as a class.