Scripe post for January 31st

Mr. Rochester demonstrated again what we had to do for the first part of our benchmark. Then after we collected our materials we all went out in the halls and set to work. With our balloons taped on to ours sticks and tape measures in hand the jumping began. Most groups started with the "broad jump" where you stood still and had to jump as high and as far as you could (you had to touch the balloon). then it was full speed ahead to the "long jump". Here you got to have a running start (still had to touch the balloon). Some groups even thought they were so good it was worth filming (oh wait Rochester said it would be a nice addition to our graphs... so never mind everyone should film at some point). So over all today SLA's recored for both the long jump and the broad jump was broken, or i guess set. We will have to find out though when benchmarks are due who holds it though.

For those of you who missed this sports filled class you should talk to your group members and set up a time when they can help you collect your data.

next time on Scribe Post we will have Sam reporting from the right side of the room. Thanks for tuning in to another Scribe Post, until next time.

Class Work 1/29/08

Algebra 2C (1-28-08)
Mileposts

These problems are Milepost problems. Milepost problems are composed of a set of skills that all students should be comfortable with using. From this point on, you will be expected to solve these types of problems. If you need help solving any of these problems then you need more practice. During the next class, inform me of what skill you do not feel comfortable executing. I will work with and then give you a sheet of problems, which will allow you to Practice those skills.

Skill #1

Find the x- and y- intercepts for the graph of: y = x² + 4x -17

X intercept is (-6.5,0) and (2.5, 0) (Parabola) Not true, someone needs to use the quadratic formula
Y intercept is (0,-17)

Skill #2

Solve the system at the right by graphing each line and finding their intersection, then solve the system algebraically to check.

x+(1/3x+1)=5
3/3x+(1/3x+1)=5
4/3x+1=5
-1 -1
4/3x=4
3*(4/3x)=(4)*3
4x=12
(4x=12)/4
x=3
y=1/3(3)+1
y=2

ok

Skill #3

Simplify each expression.

a) (2x²y)⁴
16x⁶y^{4 Not true}

= -3y³/36 = -y³/12 bueno

= 16x⁶y⁴ / 3x y⁵ = 16x⁵ / 3y not true

d) 5(5xy)²(x³y)
(125x²y²) (x³y)= not true
125x⁵y⁴

Skill #4

Solve this system of linear equations in two variables.

5x - 4y = 7
2y+ 6x = 22

Skill #5

Multiply and Simplify

a) (x+1) (2x²-3) Bueno

2x³-3x+2x²-3

b) (x+1)(2x-3)²
(x+1)(2x-3)(2x-3)
4x²-6x-6x+9
(x+1)(4x²-12x+9)
4x³-12x²+9x+4x²-12x+9
4x³-8x²-3x+9 good

c) 2(x+3)²
(2X+6)(2x+6)
4x²+12x+12x+36
4x²+24x+36


Revised: Correct way
2(x+3)(x+3)
x²+3x+3x+9
2(x²+6x+9)

2x²+12x+18


d) (x+1)(2x-3)²
(x+1)(2x-3)(2x-3)
4x²-6x-6x+9
(x+1)(4x²-6x-6x+9)
4x³-6x²-6x²+9x+4x²-6x-6x+9
4x³-8x²-3x+9 good


Skill #6

Factor each expression
a) 4x²-1
(2x-1)(2x+1) yes

b) 4x²+4x+1
(2x+1)(2x+1) yup

c) 2y²+5y+2
(2y+1) (y+2) si


d) 3m²-5m-2
(3m+1) (m-2) por supuesto

Skill #7

Rewrite the following equations so that you could enter them into the graphing calculator.

a) x-3(y+2)=6
x-3y-6=6
x-3y=12
-3y=12-x
-3y/-3=12-x/-3
y=-4+x/3 yup

6x-1 =5 Not finished
y

(㊦y-4)²=(x+1)²
y-4=(x-1)²
+4 +4
y=(x+1)²+4

Not done

e) Find the x- and y-intercepts for each of the graphs created by the calculator forms of the equations in parts (a) through (d). Not done

Scribe January 29th

It is Tuesday, January 29th, 2008.

For about 40 minutes, everybody was on Facebook, iChat, Email, and doing their own thing. He just started explaining the benchmark at 1:25ish

He showed a video of Carl Lewis.
He also showed a video of Mike Powell. He has the world record long jump (about 29 feet)

Our benchmark has something to do with these videos.

Mr. Rochester handed out the instructions for the benchmark.

Alison's up next!!!

Class Notes 1/28/08

Blogger Trivia Game

1. Who is the scribe for today?

Answer: Patrick Is the Scribehttp://algebra2cband.blogspot.com/2008/01/scribe-list.html#links

2. How many names are crossed off in the scribe list?

Answer: 3 people have been crossed off

3. How can you access the Class Notebook?

Answer:Moodle/Algebra2/Class Notebook or a link on the class blog.

4. How can you access moodle or check your SLA email?

Answer: Moodle/Sla Talk/ Sla Mail or www.scienceleadership.org/webmail or go to out class notebook and and on the left side click on SLA Email.

5. What Google/School docs for?

Answer: Google. school docs is a way to look at documents on your browser and it's a document that several people can edit at the same time

6. What is the absent sheet for?

Answer:The absent sheet is used to check attendance so that the person can get credit for the day that they missed.

7. What is the internet tools link for?

Answer:The internet tools link is so we can access tools that we may need for class.

8. What is the writing math formulas link for?

Answer: Its so we can make math formulas on the computer to upload on the blog.

9. How many post were made in 2008?

Answer: 26

10. How many post were made last week?

Answer: 7

11. How many times has Mr. Rochester posted to the blog?

Answer: 20

12. How many times has someone other the Mr. Rochester posted to the blog? (importance of labeling scribe post)

Answer: 37

13. When do we use the label OX?

Answer: (fun and two days before a test or quiz)

14. What unit are we in?

Answer: We are in unit 4

15. How many notes have been posted during this unit?

Answer: Unit 4

16. Where can you find the Youtube Math videos?

Answer:Google Video! Youtube and at the bottom of the Class Blog.

17. What do you think of the fourth video? t

Answer: the fourth video explains that hows the x and y axis being plug into the formula of a parabola will shift it left or right, make it wider or skinner.

18. Do you know how to post to the blog and how to include labels?

Answer: Yes it is so easy! Just hit new post at the top right of the page and labels are tags at the end of your post.

19. What are the appropriate labels?

Answer:name, what it is, unit.

20. What is the (POW) link for?

Answer: For the Problem Of the Week. The POW link is a math forum for the current problems of the week. It has a section for math fundamentals, geometry, pre-algebra, and algebra and the problems relate to real world situations, or activities that children can relate to.

21. Do you think this blog is a waste of time?

Answer: No, because it is an effective way to spend time communicating with other people but it can be helpful for studying. It is not a waste of time because it helps organize the things we go over in class and it provides us with a way to access the notes we take during class.

1-28-08

today we talked about educon, and we edited a google doc that we had to answer questions on.
google doc;


home work; there is a worksheet up on moodle.

Jessie is the scribe for the next class.

Class Notes 1/28/08

Getting a headstart