# Geo_Alg Review (EVERYONE HERE)

Combined review of Exponents, Scientific Notation, Volume, and area

Wednesday January 23

Do 10 conversion problems.  Write down the question and the answer.

Do 10 multiply/divide problems.  Write down the question and the answer.

Do more if you think you need the practice.

If you get done with this, extra credit for getting 5 add/subtract problems done.  IN CLASS ONLY!!

Thursday January 24

Area of squares, rectangles, circles

Volume of cubes, rectangular right prisms, and spheres (4/3 pi r cubed!)

Need more help? Check out my videos that explain area, volume, and surface area.  First Set of Review Videos  (area and basic volume). [blocked at school. Youtube!  Try them at home] You may want to take this summary quiz.

NOTES ABOUT THE VIDEOS AND QUIZZES:
It is possible some of the check boxes or input boxes may appear in the wrong place on the screen.  Do the best you can to figure out what matches to what.  The quizzes between the videos are simply to help test your understanding.  You should take a guess, check your answer.  If it is incorrect you might try again – but don’t spend forever trying to get the right answer – it will be revealed on the next video.

If you don’t think you need to watch the explanation after the quiz you MIGHT choose to skip it but there is sometimes important information here (and jokes!).

Second Set of Videos (Volume and Surface Area).   Take this quiz provided at the end (bottom of the table of contents).

Friday January 25th

Combination of the two.  Finding the volume and area of very large (or very small items) – Worksheet.

This will be added to your second semester grade – make sure you start off with an A!

REVIEW WEEK:

If you finish early (or are simply struggling), here is one of the best things you can be doing:

Basic skills Warm-up.  Should be able to put the controls at 9 and -9 and do 20 Random problems in 60 seconds WITHOUT A CALCULATOR:  CLICK HERE.  Do not change settings.  Click GO.  Work for 60 seconds then show score.

This should be review for everyone.  I’ve already done this with my algebra classes but they can certainly use more practice.  I usually wait until May to do this review with Geometry (you’ll need it in Algebra II!!).  Take advantage of all the self-help links below to figure this stuff out.

For the video links, they may or may not work from school.  Most of the worksheets have additional help at the top and the bottom of the page.

IF YOU DO THESE IN PAIRS, only put in the last names alphabetically (for instance, Taylor Wojinski) and put the student number of ONLY the first person (putting in two numbers may cause this not to record).  When you check your work later by student number, you’ll need to remember if your work is listed under someone else’s number.

Monday Jan 28

Distribution and “Reverse Distribution” – aka Factoring
http://www.teach4ever.net/SignInWorksheets/Alg2_7_DistributiveSignin.html

http://www.teach4ever.net/SignInWorksheets/Alg2_8_FactorSignin.html

Tuesday Jan 29

http://teach4ever.net/SignInWorksheets/Alg2RvwLikeTermsSignin.html

http://teach4ever.net/SignInWorksheets/Alg2Rvw2LikeTermsSignin.html

Wednesday Jan 30

http://teach4ever.net/SignInWorksheets/Alg3_3a_EquationsSignin.htm

http://www.teach4ever.net/SignInWorksheets/Alg3_3b_EquationsSignin.htm

Thursday January 31

http://teach4ever.net/SignInWorksheets/Alg7_5aSlopeInterceptSignIn.htm

ONE BELOW IS EXTRA CREDIT.

http://teach4ever.net/SignInWorksheets/Alg7_5bSlopeInterceptSignIn.html

Friday Feb. 1

If you understand distribution and FOIL, you can skip the next 5 links, otherwise look at each one of these pages in order. (Just these pages, no need to click on arrows at bottom of each screen).

NOW Doing FOIL in reverse is called Factoring. You may need to read this. For the simple case, the basic idea is that you need to find a pair of numbers that multiply to the third term and add to the second. For instance, for x2 + 5x – 6 the pair needs to add to 5 (number in front of x) and multiply to -6 (third term). The answer is a POSITIVE 6 and a NEGATIVE 1. The factored form of x2 + 5x – 6 is (x+6)(x-1) because it foils out to x2 + 5x – 6 .

Note, you might think that 2 and -3 would also work but (x+2)(x-3) is x2– 1x – 6 [the third term is right but the middle term is not because 2 and -3 add to -1]

ASSIGNMENTS: Do both this Online worksheet – and this slightly harder one

OPTIONAL: Factoring by Grouping is yet another method.  You may just want to look at this method.  It may be an easier way to figure out some of the harder questions.

Monday Feb. 4

You need to be able to complete the mini-quizzes at the bottom of the following two pages (take notes!)
Prime Numbers
http://www.amby.com/educate/math/2-1_prim.html
Prime Factorization
http://www.amby.com/educate/math/2-1_fact.html

Prime Numbers and Prime Factorization is important for ANY area of math! Once you understand these, try to factor some numbers using the following worksheet.

Do Factor tree with this below (Click the Create a Practice Problem button OR try 48, 98, or 120 to start).  Do ten problems and trees
http://www.teach4ever.net/Geometry/PrimeFactorizationPractice.htm

If you feel advanced, try to figure out the square root of a number that you’ve factored.  For instance, 18 is 2x2x3 which means the square root is the square root of 4 times the square root of 3.  The square root of 4 is 2 but the square root of 3 is irrational and must stay under the radical so the answer is 2 square root 3.  See http://www.webmath.com/simpsqrt.html for more information.

Tuesday Feb. 5 & Wed Feb. 6

Since some of you may be in CAHSEE all day, I’m giving some “bonus work” to do.  This is bonus in two ways – the most important is that it’s all stuff you really need to know for life and all those standardized tests like CAHSEE and the SAT.   Secondly, if you have a record of it (that is, you wrote it down), you can show it to the new teacher along with all the other written work you’ve done to show that you should start with a solid A.  Related to the new teacher, please make sure you’ve read my post on the home page of this site.  Your parents need to start calling to get them to speed up the hiring process.  I’m really sorry it’s taken so long but it’s in your hands now.

1)  Make sure you’ve done yesterday’s work

2)  Make sure you’ve done the work from January 23rd.  If you did not get credit for this work, send an e-mail to mtaylor@wccusd.net once you’ve completed it and describe what you did.  I’ll then give you credit.

3)  Are you missing any other work?  You can check here.  Ignore the checklist that is attached to this sheet.  It’s old and I haven’t had time to fix it.  You can go by what’s on Powerschool (11 internet assignments so far). If you submitted with a partner, it will be under their ID (if you used theirs).

4)  Read this on converting units.  My High School Chemistry teacher taught me this and I use it all the time.  Make up some conversions, try them, and then see if you can figure out the quick way to do this on google.

5)  And read this on mean/mode/median.  We live in a statistical world.  You should know what these things are and how to calculate them (ALWAYS A CAHSEE QUESTION).  Practice is here.  Here’s how to cheat on the practice – For teacher check, type in he11o where the L’s are actually ones.  This reveal the mean, median, and range for each problem (you still have to identify the mode!)

Thursday Feb. 7

Back to work.  Picking up where we left off on Monday.

When finding square roots with Pythagorean Theorem you often need to use what you learned yesterday to find the exact square root (that is, the square root of 18 is 2 root 3, see yesterday’s note).

However, this worksheet just has you find the root by using a little bit of algebra and a calculator to find the approximate decimal square root.

Pythagorean Theorem
http://www.teach4ever.net/SignInWorksheets/Pythagorean1PracticeSignIn.html

Friday – THIS MAY BE THE LAST DAY I LEAVE WORK.  Have your parents call the district!!

http://www.teach4ever.net/MWT/DistanceFormulaSinglePos.htm  Do 10 on paper according to the model.  Watch your signs!  Minus a minus means plus!  A negative squared will become a positive.

More explanation as to why the distance formula is really just Pythagorean Theorem.

Square Root of 4 is the square root of 2×2 which is 2

Square Root of 9 is the square root of 3×3 which is 3

Square Root of 5 cannot be be broken down so it is Square root 5 or \/5

Square Root of 45 is square root of 3x3x5 (prime factorization from Monday!) which is 3\/5   – This number is also about 6.8 but that is APPROXIMATE – it’s been rounded.  3\/5 is the EXACT square root.  Yesterday we were using approximate square roots.  Today we are using exact.

Square Root of 28 is square root of 2x2x7 which is 2\/7  – you can take the square root of 4 but not the root of 7 so it stays under the radical sign.  Once again, \/28 also about 5.2 but that is APPROXIMATE – it’s been rounded.  2\/7 is the EXACT square root.

Monday Feb 11

UNLESS YOU STARTED LATE, you are responsible for all the internet work listed above.  MANY of you have kept up with this and will likely have A’s come progress reports.  Others have done nothing and will get a similar grade.  Be sure to do today’s work and then make up what you are missing FOR HOMEWORK.  The deadline to show some progress is this Friday.  Progress reports due in two weeks!

Tuesday Feb 12

Register per yesterday’s instructions if you have not already.  Go the khanacademy.org and log in.  Make sure you finish the Addition/Subtraction unit (11 skills).  Watch videos and catch-up at home if needed.  While the 4 digit addition and subtraction take a little longer, this should be a really simple way to get off to a good start.

START WORKING AHEAD – If something suddenly takes longer or you miss a day, having worked ahead will make everything less stressful.

Wednesday Feb 13

Complete:  Multiplication and Division. Not enough time in class?  Do at home. For some people these will take longer than others.

Thursday Feb 14

Happy Valentine’s Day!  My gift:  A lesson on Negative Numbers and absolute value.  Be sure to complete at home if all the love in the air is too much for you to complete these skills at school

Friday Feb 15

Are you caught up for the week?  Have you made up all the work before this week? Sometimes part of your weekend is about school work.

PROGRESS REPORT GRADES GO IN ON MONDAY

Feb 18 – 22 (President’s Day week).

Monday Feb 25

Factors and Multiples

Tuesday Feb 26

Arithmetic properties

Wednesday Feb 27

Fractions

PROGRESS REPORTS WILL BE BASED OFF WHAT HAS BEEN DONE TO THIS POINT!!

Thursday Feb 28

Algebra Lesson: Exponents, radicals, and scientific notation

Geometry Lesson: Perimeter, Area, and Volume

Extra Credit for both classes (ONLY DO IF YOU ARE AHEAD!!)

EC:  Rates and Ratios

EC: Probability and Statistics

Friday Feb 29

Algebra Lesson:  Linear Equations

Geometry Lesson:  Points, Lines, and Planes