Equation Modeling (KristaKingMath)

► My Precalculus course: www.kristakingmath.com/precal...
Learn how to build an equation from a story problem. In this problem we use the description of an open top box to construct an equation for the cost of materials needed to build the box in terms of the width of the base of the box.
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If you could use some extra help with your math class, then check out Krista’s website // www.kristakingmath.com
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Hi, I’m Krista! I make math courses to keep you from banging your head against the wall. ;)
Math class was always so frustrating for me. I’d go to a class, spend hours on homework, and three days later have an “Ah-ha!” moment about how the problems worked that could have slashed my homework time in half. I’d think, “WHY didn’t my teacher just tell me this in the first place?!”
So I started tutoring to keep other people out of the same aggravating, time-sucking cycle. Since then, I’ve recorded tons of videos and written out cheat-sheet style notes and formula sheets to help every math student-from basic middle school classes to advanced college calculus-figure out what’s going on, understand the important concepts, and pass their classes, once and for all. Interested in getting help? Learn more here: www.kristakingmath.com
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[@syamalchattopadhyay2893]

Excellent video lecture.

[@kristakingmath]

That's so sweet of you to say! Thank you very much. :)

[@kristakingmath]

Thank you very much! I try to teach the way that I tutor; I'm really glad you like my style and that it seems to make sense to you!! :D

[@AndrewCharles1]

So logical. Such a clear explanation. It's mathematical beauty in motion.

[@iansalinas412]

thank you so much! I have always been so bad at writing functions from these types of problems but I understand it much better now.

[@kristakingmath]

+Ian Salinas Glad I could help!

[@calculuspro1]

Very rarely are there such good teachers as yourself. Keep doin what you be doin (sorry, from the south), cause you're VERY good at it. Thanks for the videos. Helped me get the five on AP Calc AB and BC.

[@kristakingmath]

Wow! Good for you! Thanks for sharing. :)

[@kristakingmath]

Yes! Like anything, you just have to get use to it. :)

[@musaaliyu113]

this is awesome,I've understand this kind of question as clear as this one. thank you so much.

[@kristakingmath]

you're welcome, i'm so glad it helped you understand it more clearly!

[@vdwest4592]

I think you have found your calling. You are an excellent instructor. It is ironic that you and others who take a cognitive science seem to excel in teaching. Case in point, David Harp majored in cognitive science and know he has a ton of books on learning music. Thank God for both of you.

[@kristakingmath]

don't give up! you can do it!! :D

[@SNPolka56]

Excellent presentations ...

[@kristakingmath]

Thanks!

[@oishofaizee7969]

It sounds so adorable when she says 'hi everyone'.

[@peterdahlen9892]

Have you developed this teaching technique yourself, or did you have a great teacher whom taught you this carefully step by step technique? I had a bad teacher, and in this particularly problem you presented her, he would just have written the equation with no explanation at all. For him it was a totally mysteriousness why people take a shower. With your technique I would had learned this five times faster. You are certainly an excellent teacher.

[@kristakingmath]

Hard to say. I'm not sure I have a favorite.

[@Lucuskane]

I guess this is why most structures constructed are a variations of squares and rectangles, its much easier to put them into an equation. lol!

[@monkeymuggs]

Ugg, I give up. She is a good teacher but man this stuff..

[@monkeymuggs]

she's good, but god I hate this crap.