Mastery of gradation of red rods. Transition from Sensorial area into Math.
Teacher choose a red rod and separate it from the group and let the child feel how long the rod is.
Let the child goes to the Red and Blue Rods and find one rod as long as the one teacher showed. The child carry the rod back and check by himself. Let the child moves the matching pair to another empty rug. Continue doing the same activity until all rods are matching. Grade Red and Blue Rods.