Monday, February 28, 2011

10.4- Inscribed Angles

Today we investigated the relationship between inscribed angles and central angles of a circle.  If you were absent, please complete the activity found on page 671 of your textbooks and please watch this video:
http://www.brightstorm.com/math/geometry/circles/inscribed-angles

Tonight's homework is P. 676-677 #5,8,16, and 18

Friday, February 18, 2011

10.3- Properties of Chords

Today we began looking at arcs and chords of circles and how they are related.

Along with the Acuity assignment, please complete P. 667-668 #3-15 odds

For those of you who were absent, please read this section of the textbook and check out this helpful video: http://www.brightstorm.com/math/geometry/circles/chords-and-a-circles-center

Have a great break!

Thursday, February 17, 2011

BREAK ASSIGNMENT

DUE on MONDAY, FEBRUARY 28, 2011:

Over break (or as soon as you get a chance), please log on to Acuity (https://nyc-acuity.mcgraw-hill.com/index.jsp) and review your most recent 8th Grade Predictive Exam.  Your exam results go with the booklet that I passed out in class today.  Please write down the score that you received and complete all test corrections for any mistakes that you made.  This will count as a test score.  To check your questions that you got wrong, please click on:
1. View Reports
2. 02/09/11 Grade 8 Predictive Assessment
3. Click on any Strand that you did not receive 100%
4. View the item numbers that you got wrong in your booklet that you received today

You login information:
Username: firstnamelastname (no spaces)
Password: StudentID# (9 digit OSIS number)

Please email me at bergerj@nestmk12.net if you have trouble logging in.

10.1- Properties of Tangents Part 2

Today we did an investigation on external tangent segments.

Tonight's homework is P. 656 #21,23,25,29,34

If you missed our activity or need more explanataion, please see the following video, which explains the concept we learned today:
http://www.brightstorm.com/math/geometry/circles/tangent-segments-to-a-circle

Wednesday, February 16, 2011

10.1- Properties of Tangents Part 1

Today, we did an introduction to circles and began a study on the properties of tangents.

Tonight's homework is P. 655-656 #1-10, 13, 14, and 19

For practice on the vocabulary that we learned today, please see this animation: http://www.classzone.com/cz/books/geometry_2007_na/resources/applications/animations/geom07_ch10_pg655.html

Tuesday, February 15, 2011

Test Cancelled

For various reasons, I have decided to cancel our test this week.  Please complete the review sheet though.  We will begin our unit on circles tomorrow.

Monday, February 14, 2011

11.3- Perimeter and Area of Similar Polygons

Today we learned the relationship between the ratio of corresponding sides of similar polygons compared to the ratios of their perimeters and areas.

Tonight's homework is P. 740-742 # 5, 7, 12, 13, 17, and 28

You can see the gazebo question from class here: http://www.classzone.com/cz/books/geometry_2007_na/resources/applications/animations/geom07_ch11_pg739.html

Also, we will have our next cumulative test on Wednesday (Short Response) and Thursday (Multiple Choice).  It will be two days just to ensure that we have enough time to finish the whole exam, even though it will not take both full periods.  We will review the topics tomorrow in class.

Thursday, February 10, 2011

11.2- Area of Trapezoids and Kites Investigation

Today we did an investigation on the area of trapezoids and kites and how they compare to the area of a parallelogram.  If you missed our activity today, please try it on your own from P. 729 of our textbook.

Also, check out the videos to see another demonstration of a derivation of these formulas:
http://www.brightstorm.com/math/geometry/area/area-of-trapezoids
http://www.brightstorm.com/math/geometry/area/area-of-kites-and-rhombuses

Wednesday, February 9, 2011

11.1- Area of Triangles and Parallelograms

As we begin Chapter 11, we will be exploring the area of various polygons.  Today we reviewed how to find the area of triangles and parallelograms.

Tonight's homework is P. 723-724 #3,7,13,17,23,27, and 30

Need more help?  Check out this animation:
http://www.classzone.com/cz/books/geometry_2007_na/resources/applications/animations/geom07_ch11_pg720.html
Or one of these videos:
http://www.brightstorm.com/math/geometry/area/area-of-parallelograms
http://www.brightstorm.com/math/geometry/area/area-of-triangles

Monday, February 7, 2011

Chapter 8 MORE Review

In an attempt to give you all more time to review the current chapter's material, please complete the following two activities on the classzone website, accessed here: http://www.classzone.com/cz/books/geometry_2007_na/book_home.htm
The Chapter 8 Crossword Puzzle found in the the Games and Puzzles section
and the Chapter 6 (Quadrilaterals) Assessment

For extra credit, please either email me a screen shot of your assessment results or print it out and hand to me tomorrow.  If you would like to email me, please email me at bergerj@nestmk12.net  If you email me at my DOE account, I will not be able to see it.  Thank you!

The Study Project will be due tomorrow for one day extension.  Please see me if you have any questions before the quiz tomorrow.