About Benjamin Kirk

I am a New York State Master Teacher in Mathematics at Ithaca High School. I have been teaching at Ithaca High School since 2007.

Intermediate Algebra Assignment for 3/20

We played a review game today in preparation for our Unit 7 test on Friday, March 22nd.

Today’s links

Cumulative IXL Modules

Intermediate Algebra Assignment for 3/19

Our test on Unit 7 will be on Friday, March 22, so we’ll spend tomorrow and Thursday reviewing the Law of Sines, Law of Cosines, and related information ahead of this test.

Tonight, please finish HW 7.10.

Today’s links

Cumulative IXL Modules

Intermediate Algebra Assignment for 3/14

We did some more work with the Law of Cosines today, specifically looking at two cases where it is useful: when given two sides and a single angle between them (SAS) and when given three sides but no angles at all (SSS). Note that this second case is exactly what your poster will feature!

Today’s links

Cumulative IXL Modules

Intermediate Algebra Assignment for 3/13

As we’ve observed in class, in order to use the Law of Sines, you must know (or be able to find easily) an opposite angle-side pair in the triangle. But what if all you have is two sides and an angle? Is there anything we can do with that? Enter the Law of Cosines, a generalization of the Pythagorean Theorem to non-right triangles.

Also, don’t forget about your poster project, due next Tuesday!

Today’s links

Cumulative IXL Modules

AP Statistics Assignment for 3/12

Our Unit 5 test is tomorrow.

  • You got a review packet in class today. Check your answers from the textbook review and work on the additional practice problems you can find there.
  • Work on some more of the review problems from pages 562-568. I can provide additional answers for you to look at (for security and copyright reasons, I cannot post them online).
  • As always, post here or email me with any other questions you may have.

Intermediate Algebra Assignment for 3/11

Your quiz on Unit 7 so far (Law of Sines and Sine formula for area) is tomorrow, Tuesday March 12.

After this quiz, we will move on to the next phase of the unit, a discussion of the Law of Cosines. Over the four-day weekend, I will want you to work on the Unit 7 Trigonometry Poster assignment.  Full information can be found at that link, and a preview of the rubric for the project can be found here (please note that this rubric is subject to change).

Today’s links

Cumulative IXL Modules

 

Intermediate Algebra Assignment for 3/8

We will have a quiz on what we’ve done from Unit 7 so far (Law of Sines and Sine formula for area) on Tuesday, March 12. For a visual summary of the various cases of the Ambiguous Case, watch this video.

We’ll spend some more time on Monday reviewing, but this weekend please finish the IXL assignment given in class. Complete the three IXL modules linked below to a score of at least an 80 on each. All three modules count as a separate homework credit, and any score above 80 will count as extra credit!

Cumulative IXL Modules

Intermediate Algebra Assignment for 3/7

More practice with the Ambiguous Case today! Remember: triangles where two sides and a non-included angle are given could actually refer to two different triangles, one unique triangle, or no valid triangles at all.

Today’s links

  • Homework: HW 7.6 – More Solving Ambiguous Cases
  • Lesson Video – Note that part of the “ambiguity” of the ambiguous case is that the same “SSA” set of information could determine 2, 1, or no triangles at all. We’ll have some more time to practice this in class.

Cumulative IXL Modules

Intermediate Algebra Assignment for 3/6

On Tuesday, we introduced the “Ambiguous Case” of the Law of Sines. Today, we spent some time working on how exactly one handles that situation.

Today’s links

Cumulative IXL Modules

Intermediate Algebra Assignment for 3/5

One possible flaw with the Law of Sines is an issue of ambiguity that arises when trying to use it to find a missing angle measure.

We did an activity in class, so if you missed it you should watch the following short videos to see what it involved (they’re taken from another class that did the same activity): Setup, Partial Solution, Full Solution, Alternate Full Solution

Today’s links

Cumulative IXL Modules