Teaching Number Bonds

i'm not convinced having 20 in a ten frem it's particularly helpful in terms of building upa, a model in your mind. You know, i cas om big fan on michael persian's work is thinking. But there's such a rapid amount of change in children from three to five years old,. Your to oit the conceptual lapes being smaller between the their content and the memorization. I think life is easier if you have those facts committed to memory just a ad.