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You can teach (some intuition for) multiplication without numbers by multiplying lengths to get areas. Then show e.g. how the number of seats in a theater is th
by prionassembly 6y ago
You can teach (some intuition for) multiplication without numbers by multiplying lengths to get areas. Then show e.g. how the number of seats in a theater is the number of seats in a row * the number of rows.
Let the school teacher press the algorithms on him, teach him your hacker's sense of wonder.
- magicalhippo 6y ago> 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 6y agoUsing a calculator. Not a troll: the ability to compute products and the idea that (horizontal length) times (vertical length) = (area) are different things.
- magicalhippo 6y agoSo teaching multiplication ends up as "whatever the calculator does when I press this button"?