October 14, 2009
GCF and LCM
Just a reminder, Unit 2 exam is on Monday. It’s over chapters 3 & 4. I always go over all the problems we have been assigned, and the ones that I have trouble with, I always seek help.
Today in class we learned about Greatest Common Factors (GCF’s). For an example: Factors of 12: 1,2,3,4,6,12
Factors of 18: 1,2,3,6,9,18. Now looking at both of the lists, your able to see that 1,2,3,and 6 are in both. But the greatest number that they have in common, is 6. So therefore, 6 is the GCF of 12 & 18.
We also learned about Least Common Multiple (LCM). We will use the same example from GCF, but you have to remember in GCF, it uses “Factors”, unlike, LCM uses the “Multiples” of the number you select.
Multiples of 12: 12,24,36,48,60,72,84
Multiples of 18: 18,36,54,72,90,108
Now looking at those two lists, your able to see that 36 is the LCM.Remember, Least Common Multiple is the leading “Foundation of Fractions”.
Here is a fun and interesting site to look at about GCF’s and LCM’s http://www.purplemath.com/modules/lcm_gcf.htm
Have a wonderful weekend,
Alyssa
October 11, 2009
This is for Wednesday, Oct. 7th, 2009
Sorry I never got to writing the blog on Wednesday, but I got caught up with other homework and packing for Cedar Point. Anyways, I hope everyone did good on their Gateway. I have to retake mine =[. For some reason I just wasn’t able to think, and I already was having a horrible week. But I’m going to have a second chance at it on Monday =].
On Wednesday, we learned about the following terms:http://math.about.com/library/bldivide.htm
Prime: is a natural number that possesses exactly two different factors, itself and 1.
Composite: is a natural number that possesses more than two factors.
Prime Factorization: writing a number as its unique product of prime factors.
Divisiability: if a & b are whole numbers with a is not equal to 0, then a is a factor of b if & only if there is a whole # c such that, a*c=b. We can say “a divides b” or “b is a multiple of a“.
Here is a site on divisiability:http://http://math.about.com/library/bldivide.htm
See you Monday,
Alyssa
October 6, 2009
Blackberry Word Press App
While sitting and waiting for my next class to start, I started to explore to see if I’m able to get a word press application for my Blackberry. When going on WordPress.org, I saw the link for Blackberry users to use. From there I was able to download my app to my phone. And guess what?! I’m writing this post from my phone right now. It’s very handy, since I don’t always like to carry around my tablet. I love my Blackberry. If your ever to get a new cell phone, I would recomend the Blackberry. =].
No Snow,
Alyssa
October 5, 2009
Oh How Easy Division Can Be!
Ever get frustrated with long division? Just want to give up because your brain is spinning out of control? Well today I’m going to tell you about a new way you may want to do division for now on. This new way is called, Partial Quotient Algorithm. I have found a wonderful slide show on how to do it. Please check it out! It’s very helpful!!
We also talked about the sharing method and the measurement method.
The sharing method is seeing how many groups you can make in a divison problem. Example: 36/3, there would be 3 groups, each having 12 units in them.
The measurement method is seeing how many groups of 3’s you can make out of 36. Which would be 12 groups of 3 units in each.
If you have any questions, just feel free to leave a comment, and I’ll do my best to answer them!
Enjoy the Weather,
Alyssa
September 30, 2009
More of those Properties
{Note: In the Properties, I gave my own definition to what they meant. They are not from the book.}
Well today in class we learned about the Four Properties of Addition. They are as followed:

Closure: stays w/in the set

Identity: Zero is the # added to itself, to get itself

Commutative: move #’s around

Associative: Regrouping
Then we learned about the Six Properties of Multiplication. They are as followed:

Closure: same as Addition

Identity: x*1=x

Commutative: a*b*c=a*c*b

Associative: (a*b)*c=a*(b*c)

Zero Property: x*0=0

Distributive Property of Multiplication over Addition: a(b+c)=a*b+a*c
Today was a pretty awesome day in class. Where Mrs. Andersen had all those fun examples to show us how everything worked out. Rarely to do you ever get an Instructor that will take the time out of their personal life and make up stuff like she does. I plan on becoming a teacher like her and showing my students examples of the definition(s).
My overall favorite thing today, was learning how to do the Adding and subtracting in Base 5 w/ our Manipulative Kit.
Hope everyone doesn’t get too backed up on Apple or on US31 going south between Muskegon & Apple Ave.
Other than that, enjoy the sun today!
Alyssa
P.S.:Next Wednesday, we are having our Gateway Exam #1. Be sure to start studying!! =]
September 28, 2009
Numbers & Symbols, OH MY!
Today in class we learned about all the different cultures and their number system. It’s actually a lot of fun, and I would love to take a class in it (if there is such thing!). I would have to say that the Egyptian numerals are fun to work with. The pictures seem to be easier to count up and know what number they stand for. The Maya’s (Mayan Numeration), have the line under dots once you hit five and over. So each line = 5; to me, for some odd reason, keeps thinking that the line = 10. Thats why I loved working with the Egyptian’s. Now the Babylonian can be tricky and very confusing. But after working through a few problems, I started to get the hang of it.
So if I had to rate 13 for which ones I liked working with, this is my standings:

Egyptian

Babylonian

Mayan
Also there are different bases for each culture. The American Culture is baseten, Egyptian is also baseten, but they also have the additive numeration system (pg. 127), Mayan’s have a basetwenty, and Babylonian’s have a basesixty.
There are other cultures that we didn’t go over in class or work with that you’re able to look at in Chapter 3.1 in the reading. Everyone should try them, they are pretty interesting. =]
Sorry if my blog is dry, for it’s really my first time blogging. I don’t think I would count blogging on Myspace back in the day.
That’s all I have for now. Everyone try to have a good day with the rain.
Alyssa