The Math Machine
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Ty can add. He uses the wall clock in the living room. Out of the blue, he states, “Four plus eight is twelve.”
“That’s right, Ty. What’s three plus four?”
“Uhm… wait.”
It takes him a few seconds to compute. “Three plus four is seven.”
“Great. What’s four plus three?”
“Uhm… seven!”
“Good job, Ty! That’s called the commutative property of addition.”
“Okay.” And he walks away, obviously very interested in hearing the properties of mathematics.
He can add 12 + 2, but he can’t add 10 + 4… I imagine that is because the 1 and 2 hours confuse him. I think he would do well using measuring tape.
