Timeline for Teaching Completing the Square
Current License: CC BY-SA 3.0
16 events
| when toggle format | what | by | license | comment | |
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| Aug 16, 2017 at 2:48 | vote | accept | Andy Tam | ||
| Aug 12, 2017 at 21:19 | history | edited | Dag Oskar Madsen |
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| Aug 12, 2017 at 21:19 | comment | added | Dag Oskar Madsen | Related: matheducators.stackexchange.com/questions/6031/… | |
| Aug 9, 2017 at 21:15 | answer | added | Chris Cunningham | timeline score: 6 | |
| Aug 9, 2017 at 17:59 | answer | added | pjs36 | timeline score: 2 | |
| Aug 9, 2017 at 16:41 | answer | added | guest | timeline score: -2 | |
| Aug 9, 2017 at 15:48 | answer | added | JTP - Apologise to Monica | timeline score: 2 | |
| Aug 9, 2017 at 13:38 | comment | added | G Tony Jacobs | A good way to explain the need to factor out the lead coefficient is to work backwards from the goal. Order of operations has us squaring the binomial $(x-h)$ before multiplying the number in front of it. Thus, working in the other direction, that number has to be factored out before the binomial can be "un-squared". | |
| Aug 9, 2017 at 11:53 | comment | added | DRF | I would just refer back to the usual joke about an engineer and mathematician trying to make tea with a kettle, wood stove and water faucet. | |
| Aug 8, 2017 at 16:19 | answer | added | Xander Henderson♦ | timeline score: 4 | |
| Aug 8, 2017 at 15:10 | answer | added | James S. Cook | timeline score: 6 | |
| Aug 8, 2017 at 3:31 | comment | added | Daniel Hast | If they're not sure why you factor out the leading coefficient, why don't you ask your students what they'd do instead? Either they come up with a method that also works, or their failure to do so demonstrates the reason why you taught it that way. | |
| Aug 8, 2017 at 3:27 | comment | added | rnrstopstraffic | I find it easier for them to group the two non-constant terms before factoring out the leading coefficient. It doesn't eliminate all difficulty but it's one less thing to worry about. | |
| Aug 8, 2017 at 2:02 | comment | added | Chris Cunningham | My experience with covering this topic is that it is a good one for uncovering the issue discussed in this question about equals signs. | |
| Aug 8, 2017 at 1:34 | review | First posts | |||
| Aug 12, 2017 at 21:20 | |||||
| Aug 8, 2017 at 1:32 | history | asked | Andy Tam | CC BY-SA 3.0 |