Pre-Cal 30S

The Adventure Continues ...

2006-01-30T15:49:00.000-06:00

Our adventures in blogging continue....

Watch for 3 new blogs going live February 3, 2006 ...

Applied Math 40S (Grade 12)

Pre-Cal 40S (Winter '06) (Grade 12)

Calculus 45S (Grade 12)

So Long ...

2006-01-29T15:49:00.000-06:00

I'm so glad we've had this time together,

Just to have a laugh or learn some math,

Seems we've just got started and before you know it,

Comes the time we have to say, "So Long!"

So long everybody! Watch this space in February for pointers to new blogs for each of my classes.

Farewell, Auf Wiedersehen, Adieu, and all those good bye things. ;-)

Message in a Podcast

2006-01-28T02:13:00.000-06:00

We had our last class on Thursday and made a podcast to celebrate! We left ourselves a "pod capsule" in instead of a "time capsule."

Here is our Message in a Podcast (4 minutes, 26 seconds). Please leave any questions, concerns, complaints, compliments, confusions, uncertainties, anxieties or other inquiries in the comments to this post.

This isn't our last post yet -- I've got at least two more I want to get out before the end. ;-)

Blog before the EXAM...

2006-01-27T16:13:00.000-06:00

Hahaha...... Wow... To think I'd post here before an exam. Pretty Ironic eh? Oh shoot... Didn't finish my scribe post. lol. Yeah I did. But anyways... Before the Pod get's Cast's out of the school. I'd like to say... Bye to everyone again. Espically to the Study Crew. Haha. The Blogging Crew. And the MATH Crew. Hahaha. Which is all of you guys. Math won't be the same ever again. And if we don't blog... I start a blog. Hahaha. But... Also A BIG THANK YOU TO Mr. Kuropatawa. The best Math Teacher ever. I can't live with out his jokes. lol.

So I probably won't see you guys for about....... A year or so but... I'll be arround on the blog(s). The Sargent Park Grade 8 blogging run... Some other random blogs and I'll sneek into the PC40 Winter 06 blog to leave a ton of comments. Hahaha. Hey I'll even show up to PC40s on the first day back in Semester 2. Hahaha. Also ahhh... Nevermind. lol.

Well anyways.. I'd just like to say. Good-bye and... GOOD LUCK ON YOUR EXAM!!!!

Peace. Richard C.

PreScribe

2006-01-23T23:26:00.000-06:00

So you’re probably wondering... Why I asked Liz to pick me as scribe? Why am I scribing even before class started? and... Who am I in general? Well I asked Liz to pick me as scribe because I wanted to scribe one last time before Math ends. Hahaha. I’m going to miss math… *cries. Well anyways. To answer the second question. I have to make up for taking Liz’s math Dictionary right now. Hahaha… yes I’m sorry. Don’t blame Liz… Blame me. Haha… And also… The scribe for tuesday would be up at like… 12:00 Midnight because I get home at like 11:30 lol… (Unless I do it at lunch… Which is highly unlikely…) And My name is Richard. Well anyways… Tonight I scribe about Yesterday.

Well we had allot of notes… And allot of notes… And… A few jokes. (Anyone get the punch line) [Probably Not] {Dang I suck} We also had a story and a “pod casting news event” lol

We took allot of stuff in our dictionary… And because I forgot my glasses I took Liz’s dictionary instead… lol. Haha.

[Insert Example 1 - 4]

After that we took a visit to consumer math. One lesson we dare not learn… And put it in our Math Dictionary.

[Insert Consumer Math Diagram & Notes]

Well that’s it for tonight... Hehehe… Scribe tomorrow… Hehe…

Homework was the last exercise to whenever and Mr. K keeps on forgetting his pennies

Today.... We finished our Math Dictionary. AND..

END OF COURSE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

So... We had a good time the whole class. (AKA PARTY!!!)

Tomarrow's scribe is.... Kasia. Hahaha

Sunday Punting Practice

2006-01-22T09:04:00.000-06:00

Like sokoban the target is to push objects (in this case punt-discs or 'pucks') around a maze to cover various targets. In a punt maze however the pusher slides forward tilt-style until it hits an obstacle, and a puck that gets struck will be punted forward a matching distance.'

'Aim: Use the black cross as a pusher to 'punt' the yellow pucks onto the blue targets.
Movement: Use the arrow buttons provided to move the pusher (black cross). The pusher will run in a straight line until it hits a wall or a yellow puck. If it hits a puck the puck will be punted forward a matching distance.'

Are you ready to play?

(Thanks again to Think Again!)

Why Should I Learn Math?

2006-01-17T14:38:00.001-06:00

This is taken from an article (Math Will Rock Your World) from Business Week. A few snippets:

Y'wanna get a really interesting job working with people on lots of interesting things?

But just look at where the mathematicians are now. They're helping to map out advertising campaigns, they're changing the nature of research in newsrooms and in biology labs, and they're enabling marketers to forge new one-on-one relationships with customers. As this occurs, more of the economy falls into the realm of numbers. Says James R. Schatz, chief of the mathematics research group at the National Security Agency: "There has never been a better time to be a mathematician."

Learn math!

How'd ya like a six figure salary?

...new math grads land with six-figure salaries and rich stock deals. Tom Leighton, an entrepreneur and applied math professor at Massachusetts Institute of Technology, says: "All of my students have standing offers at Yahoo! (YHOO) and Google (GOOG)."

Learn math.

D'ya wanna to work on the biggest most cutting edge issues of our day?

This mathematical modeling of humanity promises to be one of the great undertakings of the 21st century. It will grow in scope to include much of the physical world as mathematicians get their hands on new flows of data .... "We turn the world of content into math, and we turn you into math," says Howard Kaushansky, CEO of Boulder (Colo.)-based Umbria Inc., a company that uses math to analyze marketing trends online.

Learn math.

Y'wanna make one of the most significant contributions to the betterment of humanity?

"The next Jonas Salk will be a mathematician, not a doctor."

Learn math.

What are the implications for k-12 education?

Outfitting students with the right quantitative skills is a crucial test facing school boards and education ministries worldwide. This is especially true in America. The U.S. has long leaned on foreigners to provide math talent in universities and corporate research labs. Even in the post-September 11 world, where it is harder for foreigners to get student visas, an estimated half of the 20,000 math grad students now in the U.S. are foreign-born. A similar pattern holds for many other math-based professions, from computer science to engineering.

The challenge facing the U.S. now is twofold. On one hand, the country must breed more top-notch mathematicians at home, especially as foreigners find greater opportunities abroad. This will require revamping education, engaging more girls and ethnic minorities in math, and boosting the number of students who make it through calculus, the gateway for math-based disciplines. "It's critical to the future of our technological society," says Michael Sipser, head of the mathematics department at Massachusetts Institute of Technology. At the same time, school districts must cultivate greater math savvy among the broader population to prepare it for a business world in which numbers will pop up continuously. This may well involve extending the math curriculum to include more applied subjects such as statistics.

Learn more math!

"But I don't like math. Besides, I don't need it. I'm going into the humanities or business!"

As mathematicians expand their domain into the humanities, they're working with new data, much of it untested. "It's very possible for people to misplace faith in numbers," says Craig Silverstein, director of technology at Google. The antidote at Google and elsewhere is to put mathematicians on teams with specialists from other disciplines, including the social sciences.

Just as mathematicians need to grapple with human quirks and mysteries, managers and entrepreneurs must bone up on mathematics. Midcareer managers can delegate much of this work to their staffers. But they still must understand enough about math to question the assumptions behind the numbers. "Now it's easier for people to bamboozle someone by having analysis based on lots of data and graphs," says Paul C. Pfleiderer, a finance professor at the Stanford Graduate School of Business. "We have to train people in business to spot a bogus argument."

Ya gotta learn more math!

Yes, it's a magnificent time to know math.

'Nuff said.

Sunday Slither!

2006-01-15T12:42:00.000-06:00

Thanks go out to Mrs. Armstrong for pointing to today's game from Think Again!.

The game, from Japan, is called Slither Link.

Rules of Slither Link

    1. Connect adjacent dots with vertical or horizontal lines.

    2. A single loop is formed with no crossing or branches.

    3. Each number indicates how many lines surround it, while empty cells may be surrounded by any number of lines.

Play here.

Super... (secret) SCRIBE!!!

2006-01-10T16:40:00.000-06:00

Well today... Like OVER HALF THE CLASS WAS GONE!!! (doing an English exam) So... We fooled around and partied the hole class!!!! Hahahaha. Just kidding. Well we partied until I mentioned the scribe post... Then they elected me as scribe... Thanks guys... Robert... Hahaha Well anyways.. Today in Class.. We. Talked like forever... On math... and it was fun... Hehehe...

Anyways... We did questions... Hahaha... Questions on functions that we did yesterday.

Question #1

Question #2

Question #3

Well figure them out... Hahahahaha. Answers will be posted at 10:00 ;) Hahaha.

After that we put some Function notes in or Handy Dandy Dictionary. Hahaha... (couldn't resist)

Functions

Function: A function is a rule that changes one number or expression (The Input) into another number or expression (The Output)

The set of all possible inputs is called the domain.
The set of all possible outputs is called the range.

Functions (as opposed to relations)
Are rules that nave a special constraint:
Each member of the domain (the inputs) is mapped to (can be changed into) only one number of the range (only one output).

Notation: f(x) means "the rule f is appilied to a number or expression x."

Many-to-one Functions

Functions where more than one (many) members of the domain are mapped to a single (one) member of the range.

So then... The bell rang... and he never finished... Hahaha. Then... Yeah... My new name is... Richard, Roy, Malcolm, Orchard, Rico Swavi, Von-E-Rechard, Rechard, Kraimer, Ricky etc... etc... etc..

Hahaha.. Math was fun today... lol.

Well I'm out. NO HOMEWORK!!! Unless you want to figure out those questions. Hahaha. Remember Answers at 10. Hahaha. Later.

Oh yeah... Tomarrow's scribe is... YESTERDAY'S SCRIBE!!!!!

And that is... ABDI

Oh I almost forgot... SUPRISE QUIZ TOMARROW!!!

HAHAHAHAHA... Just Kidding :P

10:00... ANSWER KEY

Just For Fun (or Getting Ready to Think Again!)

2006-01-07T13:48:00.000-06:00

I found this "test" over at Teaching and Developing Online. Try it out .... just for fun. ;-)

Below are four (4) questions and a bonus question. You have to answer them instantly. You can't take your time, answer all of them immediately.

OK?

Let's find out just how clever you really are. No looking at the answers in advance.

Ready? GO!!! (scroll down)

First Question:

You are participating in a race. You overtake the second person.

What position are you in?

Answer:If you answered that you are first, then you are absolutely wrong!

If you overtake the second person and you take his place, you are second!

Try not to mess up in the next question.

To answer the second question, don't take as much time as you took for the first question.

Second Question:

If you overtake the last person, then you are...?

Answer:If you answered that you are second to last, then you are wrong again. Tell me, how can you overtake the LAST Person?

You're not very good at this! Are you?

Third Question:

Very tricky math! Note: This must be done in your head only.

Do NOT use paper and pencil or a calculator. Try it.

Take 1000 and add 40 to it. Now add another 1000. Now add 30.
Add another 1000. Now add 20. Now add another 1000 Now add 10.

What is the total?

Scroll down for answer.

Did you get 5000?

The correct answer is actually 4100.

Don't believe it? Check with your calculator!

Today is definitely not your day.

Maybe you will get the last question right?

Fourth Question:

Mary's father has five daughters: 1. Nana, 2. Nene, 3. Nini, 4. Nono.
What is the name of the fifth daughter?

Answer:Nunu?

NO! Of course not.

Her name is Mary!

Read the question again.

Okay, now the bonus round:

There is a mute person who wants to buy a toothbrush. By imitating the action of brushing one's teeth he successfully expresses himself to the shopkeeper and the purchase is done.

Now if there is a blind man who wishes to buy a pair of sunglasses, how should he express himself?

He just has to open his mouth and ask, so simple.

So simple it is ... ;-)

Morning before the test

2005-12-22T07:08:00.000-06:00

Well isn't this strange that I nearly forgot to blog. Hahaha. Why does this keep on happening to me. Well I like to say that this unit was fun in the way that it was. Hahaha. Craig. Hahaha. What a guy. Finishes the logic puzzle and then the second logic puzzle next peroid. Hahaha. Wow. You have to do this to us you know. Hahahaha. Well anyways.... Um.. Back to studying I guess. Hahaha... and Good Luck you guys.

blog before the test

2005-12-21T22:38:00.000-06:00

I think this unit is the shortest unit and the one that i enjoyed the most. I think its fun solving the Logic Problems. But unlike Crazy Craig,who can finish it in less than 25 mins., it takes me awhile to figure them out. The one that i liked the most is the one with the forensic experts. The uh, Kansas one. ^_^ pretty cool. I like this Unit because its the easiest unit so far. haha. At first, i didnt really understand the converse, inverse and contrapositive because i was away when they talked about it in class but Mr. K's post helped me alot. ahah. Doing the Venn Diagrams are fun too. The thing that im having a little difficulty with is the indirect reasoning but i still think that this unit is fun.

GOODLUCK ON THE TEST YOU GUYS. ^_^

Getting Ready For The Test

2005-12-19T22:22:00.000-06:00

A few links you may find useful in preparing for your test on Thursday:

Venn Diagrams

Conditionals (If ... then ...)

Biconditionals (... if and only if ...)

Related Conditionals (the other ones)

And here are a few quizzes (refresh the page for more) ...

Inductive Reasoning and Conjecture (5 questions)

Conditional Statements (5 questions)

Venn Diagrams Self Test (13 questions)

And finally, here are some logic puzzles to practice with ...

Dude Ranch Blues

Afterschool Activities

Monkey Business

Farmyard Pandemonium

What did you order?

Study hard and do your best work; work you're proud of!

Logical Acrostics

2005-12-19T15:27:00.000-06:00

Here's the new set of acrostics for you.

Blogging Prompt
Your task is to create an acrostic "poem" that demonstrates an understanding of logic related to any one of these concepts:

REASONING
CONDITIONAL
COUNTEREXAMPLE
VENN DIAGRAM
DEDUCTION
INDUCTION

As an extra challenge (worth an additional bonus mark) try to make a Double Acrostic, that is, each line should begin and end with a letter of the word you are working with.

Remember, this is a bit of a race. Your answers have to be posted to the blog in the comments to this post. If someone has already used a word or phrase in their acrostic you cannot use the same word or phrase. i.e. It gets harder to do the longer you wait. ;-)

Here is an example of an acrostic that Mrs. Armstrong wrote:

Always in 2 dimensions
Region between the boundaries
Entire surface is calculated
Answer is in units²

Be creative and have fun with this!!

Sunday 3x the Funday

2005-12-18T09:25:00.000-06:00

A triple header this weekend.

Mr. Zhong Kui will make you laugh. I think his "problems" are the easiest ones to solve.

Rat is another "escape" puzzle. Every time you do something wrong he squeaks.

No. 5 is a set of three puzzle/adventures to get a little boy out of trouble.

Have Fun!

SCRIBE.

2005-12-15T16:09:00.000-06:00

late post? yes, i know... IM REALLY SORRY =(

hmm what happened in class yesterday?
okay,when we got to class Mr. K asked us to draw a BIG circle on a piece of paper. Before we started our activity he mentioned that "Math is science of patterns".

Then Mr. K started off by asking us... "If we connect two points (along the circumference of the circle) how many regions will the circle be divided into ?"

We all know that if we connect two points then it will be divided into 2 regions.

"how about 3 points connected all together?"
he drew on the board three points along the circumference of a circle then counted the number of regions. 4 regions.

and then he asked us to choose 4 points along the circumference of the circle, connect it and count how many regions the circle was divided into. 8 regions.

then we made a chart that looked like this:

looking at the table/chart, is there a pattern? yes there is..

what is the pattern? the number of regions goes up by multiplying 2 to it.

then Mr. K asked us to guess what the next number would be.

"16" the students answered...

is that correct?

well, we have to check if it is...so we drew 5 points along the circumference of the circle and counted the number of regions.

16! we were right !

Then Mr. K asked if the number of points was "n", can we come up with a formula for it?

one of the students said " if n represents the number of points then the number of regions will be 2^n-1.

why "n-1"?

n-1 because the exponent of the number of regions is always one less than the number of points.

Then Mr. K asked what if we have 6 points connected all together? how many regions will the circle be divided into?

using the formula : 2^6-1 or 2⁵ we got 32.

and just like before we have to check... so we drew a circle with 6 points connected to each other then counted the regions.

31 regions ?! only 31. That means that the formula we came up with is not true and must be discarded.(some may have gotten only 30 regions. why? maybe you just missed counting a little region or you drew your circle too many) notice that there`s a little triangle region in the middle of the above diagram? if you drew your circle big enough then it should show.

Therefore 6 is the counter example for the formula 2^n-1.

coun·ter·ex·am·ple;

-an example that disproves a hypothesis, proposition and/or theorem.

"PRIME PRODUCING" POLYNOMIAL

F(x)=x²+x+41

is this really a prime producing formula? let`s check it out.

F(1) = 43 prime

F(2) = 47 prime

F(3) = 53 prime

F(4) = 61 prime

F(5) = 71 prime

okay, so far all the result are prime numbers but is it right to conclude that f(x) will be prime for ALL intergers?

answer: NO

why?: because if you try to solve it with x = 40

F(4o)=4o²+4o+41

F(40)=40(40+1)+41

F(40)=1681 which is also 41²

MARIN MERSENNE.

(picture taken from:http://shl.stanford.edu/Eyes/kircher/mersenne.html)

Marin Mersenne is a french theologian, natural philosopher, and mathematician who tried to find a formula that would represent all primes but didn't succeed. Although he failed, his work on numbers of the form
2^{p - 1}

p prime

is still of interest in the investigation of large primes.

He's name is best remembered today for Mersenne Prime.

Mersanne Prime: are primes of the form 2^p-1.

For more about Mersanne Primes: *click_here* or here

(it includes a table of known Mersenne Primes, who discovered it and when)

So far they have only found 42? mersenne primes.

Wanna become world famous? or even win some cash? You can participate in what they call GIMPS. Great Internet Mersenne Prime Search. They have already found seven of them on GIMPS.

If you're interested you can CLICK_HERE. It tells you how it works, how long it will take, how much you can win, what you need to have, EVERYTHING you need to know. :)

for more about Marin Mersanne clickhere

VENN DIAGRAMS

Mr. K also posted up some questions on the board.

1.) In a group of students 12 are taking chemistry, 10 are taking physics, 3 are taking both and 5 are taking neither. How many students are in the group?

ANSWER: 24 students are in the group

2.)In a third-rate rock band, 3 people play guitar, 4 sing, 2 do both and 6 have no talent for singing or guitar so they do something else. How many are in the band?

ANSWER:There are 11 people in the band.

3.)There are 64 kids in the "Tiny Little Cherubs"(TLC) Daycare. At lunch 59 ate green beans, 56 cauliflower, 60 ate brocolli, 55 ate green beans and cauliflower, 54 cauliflower and brocolli, 56 green beans and brocolli and 53 ate all. How many ate none?

ANSWER: One kid ate none.

OKAY... maybe i exaggerated when i said it wasnt half way yet -_-". lol. hhm, thats all i could remember...so i guess this is it.

THE EEND :)

sorry again for being late!
*if i missed anything please let me know*

oh and i found a cool site about prime puzzles and problem connected. I don't have a delicious account so i guess ill just link it in here.

primepuzzles

There's a new puzzle every saturday and the solutions will be up one week later.

oh... the scribe today was jamilynG. check out her scribe post for tomorrow's scribe.

Sunday Jumping Funday!

2005-12-11T00:00:00.000-06:00

'The goal of the puzzle is to switch the the pegs on the left with the pegs on the right by moving one peg at a time.

Move pegs by clicking and dragging them to open slots. A peg may only be moved to an open slot directly in front of it or by jumping over a peg to an open slot on the other side of it. You may not move backwards. The game ends when you win or get stuck.'

Play the game here. Can you win the 8 peg game? ;-)

(Thanks again to Think Again!)

Blog. Test tomarrow... Blog

2005-12-08T22:13:00.000-06:00

Well I guess it's me who nearly forgot to blog. Hahaha. So lazy these days... So anyways. Well Let's see. This unit is... Confusing. Well sorta. I get it and all that but you know it's all good. Yeah. Well I know most of the concepts so I'll be fine. Becides this week has been so crazy. With the math Assigment and all that. Wooo Nearly forgot. Eh Robert. Hahaha. Well I hope that I do good on the test. Good luck to all of you too. Hahahaha. Well I got nothing else to do. Maybe some studying would do me good... Anybody up for an all nighter on the chat box. lol.

My Acrostic (tangent)

2005-12-07T22:10:00.000-06:00

Tangent is a straight line that touches a circle but does not cut it.
Any tangent line to a circle is perpendicular to the radius drawn to the point of tangency.
Not only a line but it is also a trig function.
GA (line) is a tangent. Therefore, the angle between tangent GA and chord BC (angle1) is congruent to the inscribed angle subtended by the opposite side of the chord(angle 2).
EG (line) and GB(line) are congruent because they are drawn from the same point.
Note that in the case of a circle, the tangent line will touch it ONLY at a single point.
Tangent and radius create a 90 degree angle when they intersect.

.

All Together Now!

2005-12-06T23:08:00.000-06:00

OK folks, just like we did in class today. Everybody help each other and and solve this one in the comments to this post -- it's good practice for your test. ;-)

scribin' at the last minute...

2005-12-05T23:29:00.000-06:00

* sorry guys i did this at the last possible time i was suppose to work until 10:00pm ended up working until 11:00pm.

- Well, today we did a quiz on our circle geometry. Here are the questions on the quiz so you can try it again or for the first time if you were not there. In the end I'll post up the answers.
.............................................................
Circle Geometry Quiz 2

(1) angle BOC = 115'. Find the measures of arcs AB, BC, CD, and AD. Justify your solution (4 marks)

(2) If the measure of chord AB is 14cm and the measure and the measure of chord DC is 7 cm, how far from the centre of the circle is chord DC? Justify your solution. (4 marks)

(3) How far is a chord of length 8 cm from the centre of a circle with a diameter of 10cm? (2 marks)

(4) What is the diameter of a circle in which a chord 16 cm long is 15 cm from the centre? (3 marks)

..........................................................................................

ANSWERS:* i wish i could've made it into columns

(2) STATEMENT / REASON
AB = 14 cm / GIVEN
DC = 7 cm / GIVEN
OB = 7 cm & AO = 7 cm / RADII, AND AB DIAMETER
DE = 3.5 cm & EC = 3.5 cm / PERPENDICULAR BISECTOR THEOREM
OC = 7 cm / Radius
OE = 6.06 cm / PYTHAGOREAN THEOREM

a^2 + b^2 = c^2
3.5^2 + b^2 = 7^2
12.25 + b^2 = 49
49 - 12.25 = b^2
b^2 = 36.75
b = 6.06

(3) PYTHAGOREAN THEOREM
a^2 + b^2 = c^2
4^2 + b^2 = 5^2
16 + b^2 = 25
25 - 16 = b^2
b^2 = 9
b = 3

The chord is 3 cm away from the centre of the circle.

(4) PYTHAGOREAN THEOREM
a^2 + b^2 = c^2
15^2 + 8^2 = c^2
c^2 = 289
c = 17
diameter = 17 x 2 = 34 cm

The diameter of the circle is 34 cm.

............................................................

* PHEW.... sorry again guys well next scribe will be....

rannell d.

hah =) have fun rannell.

Cubeoban Sunday

2005-12-03T22:42:00.000-06:00

The objective of Cubeoban is to push/pull all the blocks to their corresponding lights. Do this by clicking on the blocks and drag them in the direction you want to push them. Play it here.

Level 1 was so easy that even I could do it. Level 2 (the image), started my thinking.

(Thanks again to Think Again!)

Circle Geometry Review

2005-12-01T21:58:00.000-06:00

We're gearing for our test now. Here's a bunch of online quizzes you can use to help get ready. Also, check out the links in our del.icio.us box, there are some really good ones there. ;-)

Proof of Congruence (5 questions - refresh the page for more quizzes)

More Congruence (5 questions - refresh the page for more quizzes)

Circles (5 questions - refresh the page for more quizzes)

Arcs &Angles (5 questions - refresh the page for more quizzes)

Arcs & Chords (5 questions - refresh the page for more quizzes)

Inscribed Angles (5 questions - refresh the page for more quizzes)

Tangents (5 questions - refresh the page for more quizzes)

Polygons (5 questions - refresh the page for more quizzes)

Whew! More quizzes than you can shake a stick at! ;-)

Scribe #48 I think... Nah... Make it 50.

2005-12-01T16:44:00.000-06:00

Well... Long time no Scribe... Hahaha. lol Anyways... Today's Chapter is...

One Regular Day in MATH

Today was a regular day. One day too many. Yet one day too late.

"Hi guys" I said as I walked in the room. I was so happy yet so sad... It's math once again and I feel so bad. It's math. It's math. I am so very pleased. Yet I still rhyme. Get to work... Geez...

Ok. Ok. I looked happily. Three problems on the board. Three problems for we.

(Ok I'll stop I have a Poetry English Assignment... Ok. Hahaha)

1. Find the values of x and y. Justify your answer.
Hint. The checkmarks and the o's are congruent.

So we all do the really long way. Then Mr. K. Tells us to check our dictionary's

ALLWAYS BRING YOU DICTIONARY TO CLASS!!!!

All of your tools are there. lol

So to justify you have to use the Statement/Reason that we learned. He showed us that we could use the Exterior Angle Theorem.

Statement

Angle DEF = 70º

X = 100º

Y = 60º

Reason

Ext. to Triangle ADE

Angle CEF is EXT. to Triangle ACE

Angle ACE is EXT. To Triangle ABC

2. For each pair of triangles write the propeterty which proves the triangles are congruent.

For this one... You had to look in your dictionary for one of four propeteries: SSS, SAS, AAS, or RHL. Which translates to: Side-Side-Side, Side-Angle-Side, Angle-Angle-Side and Right Angle-Hypotonuse-Leg. By the way you are only allowed to use those four propeteries.

Also Mr. K. Taught us the Reflexive Property. Quote "In the reflexive Propetry. You are the same thing as yourself." Basicly If you have a diagram and cut it directly in the middle. One half of the diagram is the same as the other half.

Well in the end you should of got (from left to right, top to bottom) RHL, SSS, NOT CONGRUENT, AAS, SAS, AAS

3. Find two congruent triangles and explain why they are congruent.

This one was a mix of the first question and the second question. So it was really hard. Hahaha...

In the end it ended up like this:

Statement

Line Segment DC is Congruent to Line Segemnt BC

Angle BCD is Congruent to Angle DCB

Line Segment AC is Congruent to Line Segment EC

Triangle ACB is Congruent to Triangle DCB

Reason

Given

Reflexive Propetry

Given

SAS

There was another way... To it to. It involved the top triangles and the congruent angles in the middle

After that he gave us two more questions. What fun. Ha ha ha...

To be honest I really forgot how to do these questions... The bell rang when we were going to review them and I was so lost when I was doing them... Ha Ha Ha?

Anyways... Homework is Excerise 35

AND THE NEXT SCRIBE IS...
It reads Kasia... Hahaha.

By the Way... All Math images are made by EUKLID.
Provided By Graeme. ;)

ALSO... I really think there's a PRE-TEST tomarrow... Look's Up...

The Next Scribe... Hahahaha?

2005-11-30T20:47:00.000-06:00

Well Robert told me who the next scribe is lol. Since um... Blogger isn't working for him in some strange coincidence. Don't ask me why... I'm having problems too... lol. Well here's the next scribe... (Robert did make this. He sent me it.)

Yeah it's me. lol. What a strange coincidence... Hahahahahahahahahahahaha