Laminate a number ladder, cut small slits in top & bottom & add a pipe-cleaner with a small bead. Use the bead to slide up & down as you complete addition & subtraction problems (",). could do the same thing with a horizontal number line.
Plastic Bottles Craft Ideas for Kids Plastic Bottles or Detergent Bottles Craft Ideas for Kids This section has a lot of Plastic Bottles and Detergent Bottles crafts for preschool and kindergarten. This section includes, enjoyable craft ideas, free.