> Then show e.g. how the number of seats in a theater is the number of seats in ... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		magicalhippo on March 3, 2021 \| parent \| context \| favorite \| on: What’s Wrong with “Multiplication Is Repeated Addi... > Then show e.g. how the number of seats in a theater is the number of seats in a row * the number of rows. How do you do that without adding up the number of seats in the rows or columns (ie repeated addition)?

prionassembly on March 3, 2021 [–]

Using a calculator.

Not a troll: the ability to compute products and the idea that (horizontal length) times (vertical length) = (area) are different things.

magicalhippo on March 3, 2021 | [–]

So teaching multiplication ends up as "whatever the calculator does when I press this button"?

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact