12.6 Part 2- Volume of a Sphere

Today, we learned about how to find the volume of a sphere.  You should know how to find the volume of any composite solid now using your knowledge of volume of all solids.

Tonight's homework is: P. 842-843 #13,17,20, and 21
Also, we have our volume quiz tomorrow in class.  Please study!

http://www.brightstorm.com/math/geometry/volume/volume-of-spheres
Remember that you can use this website to review all past concepts if you need extra help!

12.6- Surface Area of Spheres

Today we learned about how to find the surface area of a sphere.  Think about it taking apart a baseball, and asking yourself how much leather would you need to cover the entire surface.

Tonight's homework is P. 842-843 #3,6,7, and 9

Check out this video for extra help:
http://www.brightstorm.com/math/geometry/volume/surface-area-of-spheres

12.5- Volume of Pyramids and Cones

Today we learned how to find the area of pyramids and cones.  You should be able to apply these formulas to calculate various parts of solids.

Tonight's homework is P. 832-833 #3, 6, 11, 13, 14, 17, 18, 21, and 24

Please see the following videos for extra help:
http://www.brightstorm.com/math/geometry/volume/volume-of-pyramids
http://www.brightstorm.com/math/geometry/volume/volume-of-cones

Also, if you are interested in proving why a pyramid is one-third the volume of a prism, check this out:
http://mathschallenge.net/library/geometry/volume_pyramid

12.4- Volume of Prisms and Cylinders

Today we started our discussion on volume of three-dimensional solids.  We began by looking at prisms and cylinders which have the same formula for finding their volume- calculating the area of the Base multiplied by the height of the solid.

Tonight's homework is P. 822-824 #3,7,11,15,19, and 21

Please see the following videos for extra help:
http://www.brightstorm.com/math/geometry/volume/volume-of-prisms
http://www.brightstorm.com/math/geometry/volume/volume-of-cylinders

Surface Area Review and Logic Puzzles

Today we reviewed what we have learned so far about Surface Area.  Please be sure that you have a good understanding of Surface Area so that we can move on to Volume tomorrow.

For homework, you received two logic puzzles in class.  You are to solve them for homework tonight.  If you need help, here are some websites that give some suggestions on how to solve them:

http://www.ehow.com/how_4442217_solve-logic-problems.html
http://www.thepuzzleclub.com/logicpuzzlessolve.php

HAVE FUN!!  =)

12.3 Part 2- Surface Area of Cones

Today we learned how to find the lateral area and total surface area of a cone.

Tonight's homework is P. 814-815 #11,15,17, and 22

Please see this video on finding surface area of a cone:
http://www.brightstorm.com/math/geometry/area/surface-area-of-cones
Also, here is a video on the surface are of joined solids if you are having trouble with them:
http://www.brightstorm.com/math/geometry/area/surface-area-of-joined-solids

12.3 Part 1- Surface Area of Pyramids

Today we discussed how to find the surface are of a pyramid.  Please make sure you review all vocabulary associated with a pyramid and please see me if you are having trouble with any of the surface area concepts as we are doing them.  Don't wait until it's too late!

Today's homework is P. 814-815 3,5,7,and 23

Here is a video that may help you if you are having difficulty understanding the material:
http://www.brightstorm.com/math/geometry/area/surface-area-of-pyramids

12.2- Surface Area of Prisms and Cylinders

Today we began our study on 3-dimensional solids.  We looked at finding the surface area of prisms and cylinders.

Tonight your homework is P. 806-807 #3,7,9,13, and 17

For more help with finding surface area of these solids, please see:
http://www.classzone.com/cz/books/geometry_2007_na/resources/applications/animations/geom07_ch12_pg805.html
http://www.brightstorm.com/math/geometry/area/surface-area-of-prisms
http://www.brightstorm.com/math/geometry/area/surface-area-of-cylinders

Ch. 1-11 Test and Corrections

On Friday you received your Chapter 1-11 Test.  Test corrections are due on Monday, unless you need extra help- in which case you should come see me at lunch on Monday, and you can work until Tuesday to complete corrections.  PLEASE SEE ME if you are having trouble with your corrections!

Extra Credit Assignment

Hi everyone, please remember that your extra credit drawing is due tomorrow.  The more creative and detailed, the more points you will receive toward your project average.  All missing assignments are due tomorrow as well.

Chapter 10 Review and Extra Credit Project

Today we celebrated Pi Day and the culmination of Chapter 10 by working on an extra credit project.  Your project is to create a drawing using circles, lines, and parabolas and labeling each equation of each figure that you draw.  This extra credit project is due on Friday and points will be awarded based on creativity and detail.

Also, please visit http://www.classzone.com/cz/books/geometry_2007_na/crossword.htm?id=xword_ch10 and complete the Chapter 10 Crossword puzzle.  Either email me a screenshot of your results (email to bergerj@nestmk12.net) or print out your finished puzzle.  This is due by tomorrow.

Please also study for you Cumulative Test which will be on Wednesday (Short Response) and Thursday (Multiple Choice).

11.6- Area of a Regular Polygon

Since I know we covered a lot today about the area of regular polygons, please take a look at these videos for a more complete understanding of the material:
http://www.brightstorm.com/math/geometry/area/center-and-apothem-of-regular-polygons
http://www.brightstorm.com/math/geometry/area/area-of-regular-polygons

We will continue talking about this on Monday

Tonight's homework is P. 765-766 #7, 11, 15, 18, and 21

You will have your next Cumulative Test next week on Wedensday (Free Response) and Thursday (Multiple Choice).  Remember this covers everything since the beginning of the year.

Locus

Yesterday and today we talked about the six fundamental loci constructions.  We also learned how to find the locus of a combination of conditions.  See this video for help on the concept of a locus (keep in mind, we are only concerned with 2-dimensional loci at this point): http://www.brightstorm.com/math/geometry/circles/locus-and-definition-of-a-circle-and-sphere

For tomorrow, please complete your Chapter 10 Study Project.  See the previous post for the terms: http://nest8thgrademath2010.blogspot.com/2011/03/chapter-10-study-project.html

10.7- Graphing Circles

Today we practiced graphing circles, both by hand and in our graphing calculators.  We were also introduced to the concept of intersection circles and how this relates to loci- which we will continue discussing tomorrow.

Tonight's homework is P. 703 #23,25,26,31, and 33

10.7- Writing Equations of Circles

Today we learned the standard equation of a circle and how to write equations given the center and radius or enough information to find either of these.  If you were absent, you can find more information about finding the equation of a circle here: http://www.brightstorm.com/math/geometry/pythagorean-theorem/equation-of-a-circle

Tonight's homework is P. 702-703 #3,4,7,11,14,16,17

Chapter 10 Study Project

Your chapter 10 Study Project will be due in one week, Thursday, March 10.  Here are the terms so that you can get started tonight- please remember to include diagrams!:

Tangent (include any theorems and properties)
Central Angle (include its corresponding arc measure)
Chord (include properties of chords from section 10.3)
Inscribed Angle (include how to find its measurement)
Inscribed Polygon (include what you know about inscribed right triangles and quadrilaterals)
Angle Formed by a Tangent and Chord
Angles Inside the Circle Theorem
Angles Outside the Circle Theorem
Segments of Chords Theorem
Segments of Secants Theorem
Segments of Secants and Tangents Theorem
Standard Equation of a Circle
Locus
Area of a Regular Polygon

10.6- Find Segment Lengths in Circle

Today we looked at the relationships between the segments lengths in a circle, specifically of chords, secants, and tangents.

Tonight's homework is P. 692-694 #3,6,9,14,16
Tomorrow we have a quiz on Chapter 10.1-10.6 (Everything we have learned about circles so far).  Please review these sections and be sure that you know all of the properties of circles that we have learned so far.

Check out this animation to help with today's lesson: http://www.classzone.com/cz/books/geometry_2007_na/resources/applications/animations/geom07_ch10_pg691.html

11.4 Part 2 and 11.5- Angles Relationships in a Circle

Today we learned about inscribed polygons of a circle and other angle relationships of a circle, namely Angles inside a circle and outside of a circle.

Tonight's homework is P. 676-677 #13,15,19,21,23 AND P. 683-684 #3,6,9,11, and 13

Check out this animation for more help: http://www.classzone.com/cz/books/geometry_2007_na/resources/applications/animations/geom07_ch10_pg682.html