Ha ha, yes, how bad those schools must be. They are wholly dependent upon Germans to answer the tough questions, like what is the square of 25, and what's your best guess for the square root of 21.
One only needs to remember a simple algorithm to compute any square by hand, and realistically a computer is always a better choice. I can't understand why you think memorizing more squares provides a better math education.
One only needs to remember a simple algorithm to compute any square by hand, and realistically a computer is always a better choice. I can't understand why you think memorizing more squares provides a better math education.