Unit 4 is ALMOST DONE; 8th Grade "A" day test is scheduled for Monday, Jan 9th.
Thursday, Jan 4th will be a major review day... please don't miss that class... check your schedule and make sure you don't have a doctor appt that day... you will be seeing your math doctor... ME!!
Ask questions over the break on the blog... suggest a problem or two that you would like to see on an academy video... I feel my voice coming back already... Fa la la!!
No excuses! Be ready!
Quiz grades have been posted in the online gradebook... do you want access? Send me your email by email (bruce.chamberlain@msdk12.net), do NOT post your email on the blog... I will be setting up access over the break for those of you that already gave me your email...
Thursday, Jan 4th will be a major review day... please don't miss that class... check your schedule and make sure you don't have a doctor appt that day... you will be seeing your math doctor... ME!!
Ask questions over the break on the blog... suggest a problem or two that you would like to see on an academy video... I feel my voice coming back already... Fa la la!!
No excuses! Be ready!
Quiz grades have been posted in the online gradebook... do you want access? Send me your email by email (bruce.chamberlain@msdk12.net), do NOT post your email on the blog... I will be setting up access over the break for those of you that already gave me your email...
... and the MathChamber Unit 4 website as been updated thru January... the "extra problems" will be helpful for the test and the Unit 1-4 Cumulative Review will be helpful for the mid-term (yes, the cumulative mid-term in late January!!).
ReplyDeleteI was asked the question of how to get ready for the Unit 4 test. Here was my response...
ReplyDeleteI recommend that you "browse" everything... the chapter review, chapter test, AND extra practice problems (at the bottom of the Unit 4 algebra page). Look for problems that give you trouble and ask questions... siblings, parents, mathchamber, etc.... I don't care where, but ask questions and get answers. Make sure you know ALL of the new vocabulary. CREATE YOUR OWN FLASH CARDS for all of the terms on the first page of the Chapter 4 review and make sure you can UNDERSTAND, or at the very least, RECALL them.
You have two weeks until the test... spread your work out, do a little each day... please don't think that our review on Weds Jan4 will be enough!
Do a reasonable number of problems. What's a reasonable number? That a very individual call, every other? every third, every other odd, I don't know... you have to decide for yourself.
When is the mid-term??
ReplyDeleteThe mid-term has not been scheduled yet... sometime in late Jan... it will be a Unit 1 thru 5 inclusive... in interval notation that's [Unit 1, Unit 5]... good news about Unit 5... all time spent preparing for the Unit 4 test will make Unit 5 all the easier!!
ReplyDeleteI would like EACH ONE of my algebra students to send me an email (not a blog post, an email) within the next 2-3 days telling me about your study plan over the break and letting me know of any problems... I'm here to help if i can!
Happy New Year, everyone!!
(p.s. voice is at about 70%)
I will be out of the MathChamber office until Thursday afternoon... until then feel free to answer each others questions. I hope to have an email from each one of you upon my return!
ReplyDeletehey guys i read chapter 4-7 about ten times and i don't understand it. can someone help me?
ReplyDeleteWe will be covering 4-7 on Tuesday... and the hw will be due on Thurs... why not go back to 4-1 thru 4-6 and make sure you don't have any questions on that!!??
ReplyDeleteUnit 4 test is not until Monday for pd5 A-day.
Mr. C.
I know you said 4-7 should be easy, but could you explain to me the definitions of the terms recursive formula and explicit formula? Also, on how to get one from the other?
ReplyDeleteThe way the book words the definitions just makes me really confused - I'm also unsure on how to tell continuous and discrete graphs apart from each other.
Two questions: 1) Will the test involve writing definitions or just understanding what they mean? AND 2) Does the test have a lot of Unit 4-7 in it?
Allow me to re-state... Nuttin's E-Z... that said...
ReplyDeleteI won't be holding you responsible for the terms "recursive" and "explicit"... that said, they are good words to know.
When something recurs it repeats. A recursive formula (like an arithmetic series) has a starting number and then repeatedly adds (subtracts) a value (the common difference) to find the next or nth TERM in the sequence.
An explicit formula is something like the formula for the area of a rectangle or circle. There is no "next" rectangle or circle... you find the area by entering explicit (specific) values which are parameters in the formula. You simply make the calculation, EXPLICITLY.
Re-watch the videos on discrete vs. continuous... a discrete situation is typically identified when one or both variables only has meaning in whole increments, not fractional.
As time passes in the hour prior to game time, how many people enter the stadium? This is a discrete situation because people are counted in increments of one... we will never have 367.5 people in the stadium (unless Ben or Derek attend, but then, we are counting people, not brains, so my logic still holds).
As time passes and we fill the pool with a hose, how many gallons of water are in the pool? This is a continuous situation because at any point in time, there could be 23, 342.5, 3,142.56 gallons in the pool, depending on how precisely we want to measure.
Good questions, lmk if this helped.
Will relate, define, write be on the test and I'm a bit confused on number 18 o page 272 Find the range of each function for the given domain. f(x)=2x-7; {-2,0,1,-2} do I just plug the numbers in to the equation?
ReplyDeleteR-D-W will be on the Unit 4 Test... don't let it intimidate you... it is just a way of organizing yourself to attack a word problem.
ReplyDeleteThe range is the set of dependent values (y=f(x), right?). YUP!! You just plug in the domain (aka 'x') values to obtain the range (aka 'y') values. It's just fancy-speak for something you already know how to do!! Just remember, since the domain and range are sets, there is no repeating of values, if and when they occur more than once.
Alright Mr C thanks again!
ReplyDeleteHAPPY NEW YEAR!!!!!
ReplyDeleteI agree with anonymous I somewhat understand how to write a recursive and explicit formula, and I understand why, but I don't understand the meaning of all the numbers and letters. What do they all mean and how do they relate to one another and solving the formula
ReplyDeleteAllow me to clarify my position on section 4-7 a bit more EXPLICITLY. Hopefully, this will put your minds at ease.
ReplyDeleteOn the Unit 4 Test (for a couple of reasons that I won't elaborate on here), I am NOT going to require you to convert recursive formulas to explicit or vice versa. I will expect you to answer questions of the type on page 279 #9-29 where you are identifying arithmetic sequences (or not) and then identifying the common difference.
Essentially, the difference between recursive and explicit is that a recursive formula requires the value of the prior term in order to make the calculation, whereas an explicit formula allows you to calculate the value of the any term without any knowledge of the the prior term (or any other term for that matter). I would like you to understand this "conceptually" but again, testing will only be on the problems I detailed above.
OK wit you?
I'm comfused on rescutive formulas. I don't understand how they explained it in the book. Like it says:
ReplyDeleteValue of term 1= A(1)+4=7
Value of term 2= A(2)= A(1)+4=11 and so on. I understand the first one, but not the rest. Can someone explain this to me?
-Becca
Never mind!! I get it.
ReplyDelete-Becca
Quick question...
ReplyDeleteOn page 273 question# 37
Use the functions f(x)=2x and g(x)=x^2+1 to find the value of each expression....
f(3)+g(4) I substituted the 2x for f and came up with (2)(3)(3) making f the 2x but if I follow my method the answer is wrong because I checked the back of the book and it said the answer is 23 I guess my question is What would be "x"
In a .s.o.c Help needed thanks to anyone who has the answer classmates welcome to help.....thanks again!
Hi Candace,
ReplyDeletef(x) means function of x
g(x) also means a function of x, it is just using a g instead of an f
It is NOT "f times x" or "g times x"
Let's take them one at a time:
Given f(x)=2x, what is f(3)?
f(3)=2(3)
f(3)=6
Given g(x)=x^2 + 1, what is g(4)?
g(4)=(4)^2 + 1
g(4)=16+1
g(4)=17
So, now it's the simple stuff:
f(3) + f(4) = ??
6 + 17 = 23
Capeesh?
Mr. C.
Hi Evan.
ReplyDeleteAlright, it's processing just need to watch a few more videos and I think I'll be prepared for the quiz...thanks again Mr.C!
ReplyDeleteI mean test.
ReplyDeleteYup... remember it's not until Monday... we have Tues&Thurs before Mon!! GET SOME SLEEP!!
ReplyDeleteWhen making a table for a function what values would you pick for a function containing a decimal. For example #5 on the Chapter Test:
ReplyDeletey+1.5x-3
If #37 on pg 279 is trying to find the value of the card after you buy 12 lunches then why is the answer $11, when the equation is:
ReplyDeleteA(n)=50-(n-1)3.25 then you plug in 12:
A(12)=50-(12-1)3.25 and I get 14.25? I can't figure out why the answer is $11. Explanation?
How bout #19 and 21 on page 272? I don't get how to answer them. I tried answering it in a word problem format and a grid but it didn't look right.
ReplyDeleteWe can come in monday morning right?
ReplyDeleteNope... won't be in tomorrow until 7:30 or so... that won't be much help... better ask now!
ReplyDelete