Timeline for Student: Why not use a calculator?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 5, 2014 at 12:17 | comment | added | JPBurke | @DeanMacGregor To be fair, yes, my understanding is more sophisticated than that now, but around 3rd grade it was simply the application of a rule. | |
| Jun 5, 2014 at 12:13 | comment | added | JPBurke | @DeanMacGregor I'm not actually converting anything; I've memorized the simple rule that halving one of the factors and then doubling the product always works. I tested it over and over again with a calculator when I was very young. | |
| Jun 5, 2014 at 12:07 | comment | added | Dean MacGregor | @JPBurke but if you always used a calculator you likely wouldn't have the acumen to convert 8*6 to (8*3)*(6/3) in your head first. | |
| Jun 3, 2014 at 21:03 | comment | added | JPBurke | When I do 8*6, I double 24 in my head. Strictly speaking, I've never memorized 8*6. And it's never been a problem. | |
| Jun 3, 2014 at 17:09 | comment | added | DiscOH | As a child I loved math. I loved doing it, and I loved learning it. I was fortunate enough to see the fun and application of math in areas beyond schoolwork. So I must have gained a lot from my mental math lessons, right? No, in truth I found I could speed up my results and increase my accuracy with a watch calculator which I kept with me at all times. I've been constantly calculating my whole life, and the only real use I've ever found for multiplication tables was passing elementary level math classes. | |
| Jun 2, 2014 at 23:16 | comment | added | JTP - Apologise to Monica | To be clear, do you believe the 10x10 multiplication table isn't worth memorizing? | |
| Jun 2, 2014 at 16:16 | review | First posts | |||
| Jun 2, 2014 at 19:59 | |||||
| Jun 2, 2014 at 16:00 | history | answered | DiscOH | CC BY-SA 3.0 |