Does anyone know why the addition flashcards that come with the K core curriculum package do not include the entire addition family for any family other than the 1 addition family?
For example, for the 2 addition family it has the 0+2 card and the 1+1 card but not the 2+0 card. And yes, I even counted the cards to make sure I had them all. Still sealed in plastic wrap even.
For example, for the 2 addition family it has the 0+2 card and the 1+1 card but not the 2+0 card. And yes, I even counted the cards to make sure I had them all. Still sealed in plastic wrap even.
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