1.3 and 1.4: Segments and Angles

Today we explored 2 ideas closely related- segment addition postulate and angle addition postulate. The main idea behind both of these concepts is that “The sum of the pieces equals the whole!” Here are the notes for 1.3 and 1.4, as well as the warm-up on distance formula. We also had 2 assignments, #5 page 21 #19-39 (odd) and #6 page 29 #17, 21, 26-37 (all), 61-79 (o).
Coming Up:

• Benchmarks 1 and 2 Retake on Tues/Wed (4/5)

Posting for Points Question:
The Segment and Angle Addition Postulates show us that the sum of the parts equals the whole thing. We looked at some examples with a point between two other points or a point in the interior of an angle and wrote an algebraic expression to solve for a variable. Create your own example (2 small parts add to the whole thing) and give your problem and solution. You may want to write/work it out on paper before posting. I have given two examples below.

Our First Benchmarks

Today we took our first of MANY benchmarks. Benchmarks 1 and 2 on Classifying Angles and the Pythagorean Theorem. Check online to see how you did!
After the benchmarks, we got down to business. We used Google Earth and sites like walkjogrun.net to calculate distances, and then learned how to use the actual distance formula to find distances. What fun! The handout in class was our next assignment, #4.
Coming Up:

• Book Day on Wed/Thurs (29/30)

Posting for Points Question:
Pick 2 points and use the distance formula to find the distance between them.

Grade Reports are online!

I have the gradebook mostly set up now, or at least set up to post your grades. You can view your grades at any time here. Your password is different from the original one. Just read the announcement.
However, be prepared! I have added blog posting points to the grade report. Since many of you haven’t posted any comments yet, your grade will reflect it. Just start posting comments and it will go up!

Chapter 1 Vocab

After a quick warm-up on they Pythagorean Theorem, we spent most of the rest of the period working on our Chapter 1 Vocabulary words. This is assignment #2 and was due at the end of class. I talked briefly about some key vocabulary terms, as well as classifying angles by their measures (our next benchmark). Finally, we had a second assignment, #3 page 13 #9-43 (odd), 81-95 (odd).
Coming Up:

• Benchmarks 1 and 2 on Mon/Tues block (27/28)

Posting for Points Question:
Vocabulary is an important part of geometry. Share your favorite word and definition from the Chapter 1 Vocabulary List. If your favorite word is already defined here, select another one.

Pythagorean Theorem

Today was a good day in class. We started class with a warm up on square rooting, then got into the meat and potatoes of the lesson, The Pythagorean Theorem. Here are the notes as well as the game we played- Me Vs. You. There was an assignment, but depending on how the class did depended on how much. If you were absent, you get to do the whole worksheet.
Posting for Point Question:
The Pythagorean Theorem is our first benchmark that we will be taking next week. Give an example of finding a missing leg OR missing hypotenuse on a right triangle. Use the ^ key to represent powers.

Square Rooting

We started class with a quick review and discussion of our performance on the Pre-Assessment from Friday.  We then got a demo of the blog and how to use it.  Then we got our first warm up.
The first warm up was on the first 15 square numbers, and using this list to estimate square roots.  No homework for today!
Posting for points question:
Estimate the square root of a number and give a reason why you chose that answer.  This is an estimation, which means not exact!