scribe post---chapter9---11/18/09---kharon

Today in class we took a daily quiz reviewing stubbies. After the daily quiz we expanded on the volume equations we will be using to solve the volume problems. Today we learned about POINTIES, which are similar to stubbies but also different. Stubbys have two similar bases and pointies only have one base and one point(hint the name POINTIE). An example of a pointie is a pyramid. The equation to find out the volume of a pointie is as follows Vp=Ab*Hp, which in words is Volume of Pointie=Area of Base*Height of Pointie. We went over one example problem, then we watched jojo play with his Pointie Toys. Then we did our homework which was all about pointies and finding the volume of them. We watched a movie about pointies that explained them and showed examples. The guy in the video had a pretty cool accent But yeh...POINTIES!

the next scribe is....uhh....hmmm....Jericho!

Chapter 9, Monday Nov. 23, Scribe post, Jericho

Hey guys

So today was a pretty chill day in class. We started the day off by taking a daily quiz, then once

Jojo collected the DQ and the note cards, he passed out the answer manual and allowed us

to check our answers for a few minutes. Then we all said which ones we had questions on and Jojo went over them on the board. We did #9, 14, and 1f. 

This chapter about volume and solving for missing sides or the volume of a certain figures really is not that difficult in and of it self. There are just a lot of steps that you have to go through to solve the problems. So I would say take your time on each one, and work on memorizing the different types of shapes and the equations for finding the area of them. 

The sheet that Noah posted (Volume of Shapes) is very helpful, so I would look at that.

Have a good rest of your short week! and a happy thanksgiving!

LOOK! HELPFUL FOR DAILY QUIZ STUDYING AND FINAL!

Hope this is helpful! :)

Scribe Post, Chapter 9, Charles 11/17/09

Sooooo because Jojo has been struck with the bubonic plague for the past few days. Our schedules have been a lil bit off-ish between the 3 classes. Ya figgadeal me? So for some of you this may be a review of the day and for others you should consider reading this post as "getting ahead". It'll almost be as if you know what Jojo will say before he says it. In 3rd period today (SHOUT TO MY ClASSMATES) we started working on Chapter 9 which revolves around finding the Volume of 3-Dimensional geometric figures. As Jojo began his lecture today on Chapter 9 he introduced us to a "term" that helps describe a certain type of 3D geometric figure. This term is known as a...Dunh...Dunh ....DUUUUUNH.... "STUBBY" (or stubbies/stubbys for plural). This term is the first cousin once removed of the infamous "Animal" you've probably heard Jojo say a couple of times in class. Well a stubby is described as, " A 3D geometric figure that has the same shape for the base as it has for the top."

This cylinder for example would be classified as a stubby because it's bases are the same shape.

But this cone cannot be classified as a stubby because even though it is a 3D geometric figure it does not have two bases that are the same shape.

In order to find the volume of the stubby you must use the formula V=AH when V=volume, A=Area and H=Height.
After all of these rules about the stubby were written down Coco Jadray caught wind of another headache due to his chronic bubonic plague therefore we sadly could not continue our lesson and we began to use what learned from the reading we did the night before and lesson we learned about our new friend the stubby and began to do our homework. This consisted of knowing all the formulas to find the volume of the geometric figures we will be studying in class. Soooooo I took the liberty of finding some brief videos that will help give us the basic idea of how to use the formulas and find the volume of the different geometric figures given on present and future homework, DQs, and tests.

http://www.youtube.com/watch?v=g6EbYO7FQDI&feature=channel
http://www.youtube.com/watch?v=8is_l6gtN40&feature=channel
http://www.youtube.com/watch?v=FyznprKzLN4&feature=channel
http://www.youtube.com/watch?v=ZDK9O28mDCo
http://www.youtube.com/watch?v=-YaLh-uMImw


Next Scribe is ...TADAAAA...K-Ron. YAAAAAY!!!! GO K-ron!!!!

Tom, Scribe Post, Chapter 8, 11/12/09

MATH CLASS (YAAYYYYYYY)

Today was a great day in math.

We started the class off with a daily quiz where you needed to determine what type of right triangle a certain triangle was or weather it was a right triangle at all.

But to figure out the answer to this question i guess you will just have to go to class tommorow and find out.

As every one should know we have a Test on Tuesday. So we discused the test and the tutorial design sheet which will be finished tommorow and should be posted by saturday.

Jojo than passed back daily quiz #27 the question for this daily quiz was basicaly the same as todays just determining a different triangle. We first can see that the triangle is a right triangle because there is a half square as an angle indicating the right triangle. The other side lengths are leg1=3 and the hypotenuse=6 The two special right triangles we know are 45/45/90 and 30/60/90 so i found it right to look for these two first and if it is nether than we know the answer will be a different right triangle. I found the best way to determine the different triangle it could be is to find the length of the missing side. After inserting the numbers into pathagorians theorm A^2+B^2=C^2 we come out with 3^2+x^2=6^2 where x is the missing leg. We than get 9+x^2=36 subtracting 9 from each side we get x^2=27 we than need to get the square root of each side coming out with x=5.2

Than comes finding out what kind of triangle we have. we know in a 45/45/90 the two legs will equal eachother and we can obviously see 3 does not equal 5.2

In a 30/60/90 triangle leg1=1 leg2=square root of 3 and the hypotenuse=2

if we multiply the leg(3) by the square root of three we get 5.2 which lets us know the triangle is a 30/60/90

Ok well i know that if i put a vidieo up no one would watch it but what if i told you it was a little british boy singing than you cant not watch it. it is truly nessesary.

http://www.youtube.com/watch?v=bP3i5dpezuk&feature=related

Just watch it. It will actually raise your test score by at least 10 points probably more.

well thats a wrap i got nothin more to tell you about math.

accept that the next scriber is gunna be charles...sorry dude dont hate me....

Henry, Scribe Post, Chapter 8

Today in class we talked about the homework assignment which was assigned on the 9th (monday). The assignment was on page 108 and included all of questions 8 through 15.

In order to create a scribe post for today's class I will review some of the things which we used to solve these problems. For more specific answers, I suggest you consult a classmate of PB Works on the assignment.

To complete problems 8 and 9, you must have known the rules of special right triangles like a 30-60-90 right triangle and a 45-90 (or 45-45-90) triangle. In an attempt to avoid redundancy, I would suggest you refer to Andrew's post on special right triangles from yesterday which covered all the things you need to know.

The pattern I observed throughout the problems on this assignment was the need to create triangles in order to solve for other lengths.

In 10, you needed to create a right triangle to solve for the height of the triangle.

In 11, you needed to use the information given in the hint and apply that to the understanding you have of relative lengths of a triangle.

In 12, you needed to use your knowledge of pythagorean's theorem to solve for the variables.

In 13 and 14, you needed to use the grid provided to create right triangles off of the hypotenuses who's lengths were not given in order to solve for said hypotenuse.

In 15, you needed to solve the length of a hypotenuse which acted as the diameter of a circle at which point you needed to solve for the area using the formulas we learned in the previous chapter for area of a circle

Be sure to check back in your book to the reading assignment sections which you didn't understand. All of the processes required to solve problems assigned in the homework are provided earlier in your textbook.

Remember that our test on chapter 8 will be on Monday. Prepare for it with the information given on our various resources.

The next scribe will be Tom.

Andrew, Scribe Post, Chapter 8

In class we have started learning about the Pathagorian Theorm (A)^2+(B)^2=(C)^2 or (Leg1)^2+(Leg2)^2=(Hypotenuse)^2

We also began talking about Right Triangles and in class we learned some special right triangles.  We learened the 30-60-90 triangle and the 45-45-90 triangle.  These two triangles have side lengths whose ratios will always stay the same and make it easy for us to solve for missing side lengths.

                                                                               30-60-90 triangle

                                                                     45-45-90 triangle
Using these special triangles we can take the proportions of the sides to find the side lengths of similar figures and we can use the proportions to find missing side lengths.
This is a very useful tool and all you have to remember is:

30-60-90 triangles 

leg=1

leg=square root of 3

hypotenuse=2

45-45-90 triangles

leg=1

leg=1

hypotenuse=sqaure root of 2

We will have a test on November 16 on Chapter 8

The next scribe is Henry

Monboss, Scribe Post, Chapter 8

Howdy Guys,

Today we began a new chapter; Chapter 8: The Pythagorean Theorem and Special Right Triangles. We started class by exploring and looking into what exactly is the Pythagorean Theorem. The Pythagorean Theorem was developed by the philosopher and mathematician Pythagoras.




What is the Pythagorean Theorem?
Pythagoras proved that every right triangle square is
a^2 + b^2 = c^2
or
(leg)^2 + (leg)^2 = (hypotenuse)^2

Here's an example to show the equations use:




The figure above shows us the use of the equations because the number of squares around one side or leg of the triangle added with another side or leg of the triangle equals the hypotenuse, which is the sum of the two legs.

Example of the use of the Pythagorean Theorem:
(a)^2 + (b)^2 = (c)^2
(2)^2 + (3)^2 =(c)^2
4 + 9 = c^2
(squar. root)13 = (squar. root) c^2
c = (squar. root) 13

The Importance of Perfect Squares in the Pythagorean Theorem
It is important to know your perfect square, numbers that you will get if you multiple two numbers that are the same together ( e.g. 2*2, 3*3, etc.), because a lot of times you will need to simplify a number under the radical.

For example:
(2)^2 + (4)^2 = c^2
4 + 16 = c^2
20 = c^2
(squar. root)20 = (squar. root)c^2
now this is where some people will stop and believe the problem is over; however, using perfect squares we can simplify (squar. root)20 to:
(squar. root)4 (squar. root)5 = c
using my knowledge of squares, i know that the square root of 4 is 2 giving me:
c = 2 (squar. root)5

Now you are probably wondering how did i figure out that 4 and 5 will allow me to simplify (squar. root)20. Well this where the importance of knowing your Perfect Squares is vital.
Here are the Perfect Squares till 15:

4
9
16
25
36
49
64
81
100
121
144
196
225

Well young lads and young ladies that is all is I have for you.
May knowledge and strength be upon you.
Next Scribe Andrew

- Monboss

Scribe Post, Noah, Chapter 7

Hello Everyone, i hope everyone is well-rested from their exciting halloween weekend.

Today in class we had our Daily Quiz 23. On the quiz, it gave you two triangles with one missing side. You

had to find the missing measures. Be sure you know this for the test. The quiz went great, it was more difficult from the previous quizzes, so if you need extra help on that quiz, be sure to talk to a study group or a teacher before the test on Thursday, November, 5, 2009. We also got our quizzes back from Daily Quiz 22. Which a lot of people did greatly on. Today we also got the opportunity to look over our homework and check with the handy dandy answer packets. Many students had questions on Question 8,

Focusing on Question Eight, we made sure to cover the different ways you could answer the problem.

The Image above, shows a collection of congruent shapes

We went over how you can use a proportion to find the answer to the problems.

With the great help of our teacher, we were able to look at some example problems and go over the questions that many students had in class. Because we got so invested in figuring out and answering the many questions students had, class was cut short and we weren't able to finish all the problems.

Even though today was a more low key day in class, it was still important to stay focus and take good notes,

.

Just a couple of helpful reminders :

1. Be sure to take extra detailed notes on your homework and in your math dictionary these last couple of days before the test, so you can be prepared for it this upcoming thursday.

2. Be sure to come to class with questions to be addressed.

3. If needed be sure to get a study group together sometime this week, if needed

4. Make a study guide for the test on thursday, it can be great fun and very useful

5. Review your notes every-night before bed, it can help a lot

The Next Scribe will be posted by Jojo, there are no more scribes available at the moment

Have a great evening, and get a good nights rest, and be sure to come to class prepared for a great day!

The PoP Reflections BoB

This post will act as both a PoP and a BoB. So, it is basically "required" extra credit!

In this reflection post, I would like you to comment as you generally would, but all comments are due tomorrow!

Please share all of the homework problems which you have the correct answer from the manual, but were not explained in class to you by the teacher or by a fellow student and you must review before the test. We will look to get them all covered in the next day or two. Please include your class period so I can organize the questions.

In addition to those questions, please make general BoB comments (that's where you get the extra credit)!!!

I am going to offer you one bonus point on your test with completion of a simple assignment. I would like you to post your reflections on the material covered so far. Just comment on this post. To get that bonus on your test, the kind of post I'd like you to make should have one or more of these characteristics:

• A reflection on a particular class (like the first paragraph above-how did that class enhance your learning?).
• A reflective comment on your progress in the course.
• A comment on something that you've learned that you thought was "cool".
• A comment about something that you found very hard to understand but now you get it! Describe what sparked that "moment of clarity" and what it felt like.
• Have you come across something we discussed in class out there in the "real world" or another class? Describe the connection you made.