Issue 352-EV7-suggestion #353
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tagging @StevenClontz @siwelwerd @jford1906 for thoughts |
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While we're touching this, can we add |
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Last comment for now: maybe in Fact 2.7.5 we should
Converting this to a draft while we discuss things. |
Co-authored-by: Steven Clontz <[email protected]>
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do we give answers for all parts, or just the MC? |
great idea |
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Definitely MCQs, other things can't hurt either, with the ultimate goal of having answers for everything someday (at least enough for an instructor to use). |
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leaving for the night, but here's the work for the example so we can add the answer and possibly consider restructuring the activity |
Co-authored-by: jkostiuk <[email protected]>
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@StevenClontz I made a few changes and am ready for more input. For some reason, it's not building and there's a conflict to merge... |
It was the settings.json file, I just discarded those changes so it will merge fine. You had started work on this before we de-tracked the settings.json file is why that popped up. |
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@StevenClontz you and I were going back and forth on this a while back and I forgot to mark it ready for review again, so now it's "ready for review"! |
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@StevenClontz just made a commit--is that what you mean?2 |
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| <answer> | ||
| <p> | ||
| D. | ||
| </p> | ||
| </answer> |
| <sage language="octave"> | ||
| <input> | ||
| row1=[] | ||
| row2=[] | ||
| row3=[] | ||
| rref([row1;row2;row3]) | ||
| </input> | ||
| </sage> |
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I think we usually just have a blank sage cell when we don't provide the matrix terms.
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* suggested edits * adjusted MC options * Update source/linear-algebra/source/02-EV/07.ptx Co-authored-by: Steven Clontz <[email protected]> * accepted a suggestion and fixed some typos * Update source/linear-algebra/source/02-EV/07.ptx Co-authored-by: jkostiuk <[email protected]> * implemented suggestions: added answers, textcolor * Discard changes to .vscode/settings.json * reorganize statement/answer * further reorganizing --------- Co-authored-by: Steven Clontz <[email protected]> Co-authored-by: Drew Lewis <[email protected]>
My attempt at addressing #352.
First, I got rid of part (c) in 2.7.3 and changed the MC options in the revised activity. My thinking is that this more focused now around the (in)dependence and spanning/not spanning of the solution set.
Second, I copied this sequence with a more complex example (this time having 4 free variables).
My reasoning is that this example is now meaty enough that we will be forced to consider how we might test that the resulting set is independent. I suspect some teams may defer to the methods of EV4/EV6 and then we probe them about why it's the case that these guys are automatically independent.
Because this example is so meaty, I got rid of the two examples that follow but kept the one where the solution space is trivial.