Once Bean had been working on 1-10 and then the concept of zero it was time to move on to the teen numbers. I introduced him to the Montessori bead stair and he practiced identifying what amount each bead chain was and then putting them in order from 1-9.
Next I introduced the bead chain of 10 golden beads and then we worked on combining one golden bead chain (unit of 10) with each of the above beads to make the numbers 11-19. We practiced not having to count the gold bead chain as we knew it was already 10 so we could start with 10 and then just continue counting the other colored beads.
Next I introduced the teen board. It starts with the number 10 in each space and then you slide a number over the zero to make the teen number. After demonstrating how it works Bean then was given all the numbers 1-9 and asked to "make 11" or "make 12" and he would have to find the number and slide it into the board to show the number I was asking for.
Next we combined the teen beads and the teen boards. He had to both make the number on the board that I asked and then go back and put the correct beads next to it to show the number.
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