I don't like the scoring of the third sample student response for #28 (page 14 in the sample responses). The student algebraically determined the vertex of the translated parabola (and wrote out all the steps) but the scoring didn't count this as 'explain'. So 'explain' means the student needs to write it out in words, not mathematics?
I'm surprised that this forum doesn't have any comments yet on the questions themselves. Was I the only teacher surprised by #31? Holy cow, fourth degree polynomial factoring in Algebra 1.
From: email@example.com [mailto:firstname.lastname@example.org] On Behalf Of Kathy Noftsier Sent: Tuesday, June 03, 2014 11:03 PM To: email@example.com Subject: Re: grading cc algebra
If you read the sample responses and not just the rubric it is very possible with the right justification.
----- Original Message -----
Sent: Tuesday, June 03, 2014 9:22 PM
Subject: Re: grading cc algebra
I would be surprised if 300 was accepted. The question clearly indicates that x "represents the number of products, in hundreds...," so if x = 300, the student is suggesting that it would take 300 hundred products to make the production costs equal, which is not correct. The value of x is 3, meaning that 300 products would be required.