Agreed. My HS aged son does well in all of his math classes but is entirely dependent on his calculator to solve any given problem. I worry he will struggle as

Agreed. My HS aged son does well in all of his math classes but is entirely dependent on his calculator to solve any given problem. I worry he will struggle as he reaches college level math since he hasn't ever internalized what the calculator is doing. He simply plugs in the numbers and gets an answer.