We placed some 10 frames at one of our math centres this past week along with numbers 1 to 10 and some rocks to represent the numbers. Toby enjoyed working with one of them independently. I had a chance to sit with him and talked to him about what he was doing.
He told me that he took the 1 and the 3 and he made 13. He then took the rocks and he filled the 10 frame. He then proceeded to count the rocks and told me that it makes 10. He explained that that didn't make 13 so he added another 3 rocks and that made 13. Great problem solving Toby!