alt Hacker NewsThe Washington schools constantly ask for more money so they can teach. I don't see what monetary resources are needed to teach arithmetic beyond a blackboard and chalk.
Projectors, videos, computers, tablets, calculators, are all completely useless in teaching math.
Walter,
I have a great deal of respect for you. Your math skills are much greater than my own. But you have stretched your statement too far. Flash cards can be very helpful in teaching math. Timed tests for math facts can be very helpful. Both of these can be facilitated with computers or tablets. Animations can be a very useful instructional tool. Even taking a picture of the chalk on the blackboard and putting it online can help students (and possibly helpful parents) review the in-class lecture from home while they do their homework.
I don't dismiss your overall point, but don't be too flippant. A video of the lecture can be very helpful.