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Issue 352-EV7-suggestion #353

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Issue 352-EV7-suggestion #353

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jkostiuk
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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.

@jkostiuk
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tagging @StevenClontz @siwelwerd @jford1906 for thoughts

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@StevenClontz
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While we're touching this, can we add <answer>s for the instructor edition?

@StevenClontz
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Last comment for now: maybe in Fact 2.7.5 we should \textcolor these rows to emphasize why RREF of the appropriate matrix will have all pivot columns:

image

Converting this to a draft while we discuss things.

@StevenClontz StevenClontz marked this pull request as draft October 11, 2024 19:32
Co-authored-by: Steven Clontz <steven.clontz@gmail.com>
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@jkostiuk
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While we're touching this, can we add <answer>s for the instructor edition?

do we give answers for all parts, or just the MC?

@jkostiuk
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Last comment for now: maybe in Fact 2.7.5 we should \textcolor these rows to emphasize why RREF of the appropriate matrix will have all pivot columns:

image

Converting this to a draft while we discuss things.

great idea

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@StevenClontz
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While we're touching this, can we add <answer>s for the instructor edition?

do we give answers for all parts, or just the MC?

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).

@jkostiuk
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IMG_2023

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 <kostiuk.jordan@gmail.com>
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@jkostiuk
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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...

@siwelwerd
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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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