Timeline for Best way to explain the thinking steps from x² = 9 to x=±3
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 4, 2024 at 19:10 | comment | added | Sue VanHattum♦ | Actually, I've thought about it more, and I don't think this exact thing works. But I think Althea and Mom might turn to desmos to look at a few graphs. | |
| Sep 4, 2024 at 11:12 | comment | added | Solomon Slow | @Crowley, more correct, but harder to describe in prose. | |
| Sep 4, 2024 at 1:32 | comment | added | Crowley | Dont turn the graph, flip it. If you have foil instead of paper, it will be easier to see the result. ANd go with $\sin x$ and $\sin^{-1}x$ too. | |
| Sep 2, 2024 at 19:05 | comment | added | Sue VanHattum♦ | Yes. I will try to incorporate this! | |
| Sep 2, 2024 at 17:55 | comment | added | trula | Using your scrap paper, plotting y=x^2 and y=9 will make the discussion shorter. My 12 year olds would be bored by the long discussion. Also not making a distinction between the solution of x^2=9 and the value of $\sqrt{9}$ which is positive seems not good. | |
| S Sep 2, 2024 at 16:05 | review | First answers | |||
| Sep 2, 2024 at 21:11 | |||||
| S Sep 2, 2024 at 16:05 | history | answered | Solomon Slow | CC BY-SA 4.0 |