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Wednesday, September 28, 2011

Converting between fractions and decimals



Hey everyone!  As you know, I will not be in school on Friday for Rosh Hashanah so I hope that class goes well and you do your best work with the sub.  You will correct the homework from today and work on a class assignment during the period.  If you finish early, there should be a challenge problem for you!

In class today, we began looking at converting decimals to fractions and fractions to decimals.  I was going to type out a big long informational post, but I found two great pages on mathisfun.com that covers everything.  If you have questions, click the links below.


Converting decimals to fractions


Converting fractions to decimals

These links should be a big help!  Fractions should always be in lowest terms when possible.  Remember that when you divide a fraction to turn it into a decimal, the NUMERATOR goes inside the house and the DENOMINATOR is on the outside.  Be on the lookout for repeating decimals and use bar notation when you find one.  Otherwise it should be Terminating.


Have a lovely weekend.  I won't be posting tomorrow or Friday.  L'Shana Tovah if you are celebrating the Holiday.  :)

-Miss K  :)

Tuesday, September 27, 2011

Can you figure out why this won't work?

Sign Of The Times of the Day

-Miss K  :)

He he he, ouch!



-Miss K  :)

A pumpkin grows in CT



Time Lapse video of a giant pumpkin growing in CT to a whopping 1,487 lbs!  I think that you can even tell when Irene comes by and the tarp comes down.

-Miss K  :)

A math teacher's favorite kitchenware!



By the Spoon Sisters

-Miss K  :)

LCM

Today we began working on LCM...

Here are some reminder slides from today's lesson:





Try the game from class!

Tonight's homework is the LCM worksheet.  Remember that you don't have to do the notes side and to read the directions along the side of the paper.  You MUST do #1-8 and 53 and 54.  Choose at least 10 problems on numbers 9-52.

Have a great night!

-Miss K  :)


Monday, September 26, 2011

Comparing and ordering fractions

Today we began working with comparing and ordering fractions.  When we compare or order fractions, we can take three approaches.

The first is using logic.  Sometimes you can use common sense to figure things out.  For example if one number is bigger than a half and the other is larger than a half, you don't really have to any calculations.

The second method is probably my favorite.  If we cross multiply going "up on a diagonal" we can easily compare fractions.


Finally the last method is finding common denominators and then comparing the fractions.



Since finding common denominators can be tricky, check out this video to help you...

Another one:

And one more:

Though all of these videos show using Least Common Denominators (LCD) in addition and subtraction problems, the process is the same.

Tonight's homework is to complete the comparing and ordering fractions worksheet.  Remember that you only do the side with the practice problems, #'s 1-22.  

Good luck!  More review on this tomorrow!

-Miss K  :)


Friday, September 23, 2011

The Vi Hart videos we watched after today's quiz...

Squiggle, squiggle, squiggle...


Drawing snakes, "demented" checkerboards, and everything else...


snake, snake, snake...


And the Silly Band video...


Check out her YouTube page or her webpage for more from Vi Hart!

-Miss K  :)

Quiz today!

Nothing to report on the quiz just yet!  If you were absent today, make sure that you stop by on Monday to arrange a time to make up the quiz!

I hope to have the quizzes corrected by Tuesday so that you can see your score!  :)

Enjoy the weekend!

-Miss K  :)

Thursday, September 22, 2011

First Quiz Tomorrow.

Hey everyone!  As you know, we have the first quiz of the year tomorrow!  I want to make sure that you are as successful as you can be, so be sure to study this evening!!!

If you want to do a bit more practice, you can work on the problems we did in class.  They are all below in this post.

Practice prime and composite sorting...
Pick your own numbers.  You can check out my old prime and composite post here!

 Practice your divisibility rules...
Pick your own numbers and use the rules from this post to help you remember!


Practice working with fraction models...

Circle 1/5 of these soccer balls.  Or 3/8, or 1/20.
 Try 5/8 of these cowboy boots, or 1/4, or 5/6.
 Circle 1/3 of the ice cream cones, or 2/7.
Practice Probability...

Make up your own probability problems using the items from my junk drawer.  Combine them to make it more challenging.  Be sure to simplify!
 Practice working with ratio...

Use these items to make up ratio problems.  Again, be sure to simplify your answers.


You have your study guide as well as your old homework papers to practice for the quiz tomorrow.  Come in well rested and prepared to show your best work!

-Miss K  :)

Wednesday, September 21, 2011

Probability


We were able to play with probability in class today!  Here are some highlights...


We can examine Probability in similar situations...



We can use probability to examine almost anything...



Or use traditional means of looking at probability...


Tonight's homework is to complete the probability worksheet.  The study guide is also due tomorrow.

Have a good night!

-Miss K  :)



Tuesday, September 20, 2011

This may be the best video I have ever seen on the internet...

...and I've watched a ton of videos on the internet!


LAUGHS! from Everynone on Vimeo.


-Miss K  :)

Perfecting percent!

I am 100% sure that I had fun in class today and I hope that you found at least 80% of class enjoyable.

We started looking at percents today.  I love percents because they often mean that I get to go shopping!!!






(I love shopping!)

Or we get to eat!!!






We also use percents for grades, surveys and discussing time!


Tonight's homework is to complete the percent worksheet.  Please remember that #7 is optional!!!!  Also, the study guide is due Thursday.

Remember that percent is per 100!

If you want to challenge yourself and practice working with percents, fractions and a few decimals, check out this game!

-Miss K  :)



Monday, September 19, 2011

Fraction Models

Today we began reviewing fraction models.  Be sure to complete your homework, fraction models worksheet, tonight.  It should be pretty straight forward!

Want some practice?  Try this site!

-Miss K  :)

Sunday, September 18, 2011

Friday, September 16, 2011

Don't tell Mrs. B!!!!!!



-Miss K  :)

Prime and Composite Numbers and a bit of Divisibility Rules

We reviewed a bit of our divisibility rules today in class.  As an intelligent parent mentioned...  Technically all numbers are divisible by all numbers, but they often result in yucky, long decimal values.  When I talk about "divisible" I mean EVENLY divisible.  :)

We completed the large wall Venn Diagram in class today.  A big thanks to my Green class that put ALL of the numbers in the Venn Diagram...



OR THE BOX OF SHAME!



We also began to learn about Prime numbers...

We used the Sieve of Eratosthenes to identify the primes from 1-400.  Try it yourself on this page.


Want some practice learning about Prime and Composite numbers?  Check out this tutorial from Math is fun.

No actual homework this weekend, but we will have a quiz on September 23rd.  I handed out a study guide in class, but it seems like a few people left it behind...  Read below to see what you might have forgotten to bring home!


You are responsible for the following information for this quiz:

1)  Divisibility Rules - you will be given a number and must be able to determine whether it is divisible by 2, 3, 5, or 10 using a Venn Diagram.

          For example:  56,340   
              (You would place the number  in the correct space on the Venn Diagram)

***You must have the divisibility rules memorized***
 

2)  Prime and Composite Numbers - you must know the definitions of prime and composite numbers

          Prime Numbers - the only factors of a prime number are 1 and itself

          Composite Numbers - Composite numbers have other factors besides 1 and itself

You must also be able to sort a list of numbers in two groups: prime & composite
 

3)  Probability & Ratio

You must know how to write a ratio in lowest terms and find the probability of an event as a fraction in lowest terms.

For example ~ Probability:  A junk box contains 5 markers, 6 pom-poms, and 3 beads.  What is the probability of picking a marker from the box without looking?  Answer:  5 out of 14

Ratio:  What is the ratio of pom-poms to markers?  Answer: 6:5 or 6 to 5 or    6
                                                                                                                       5
 

4)  Percent

You must be able to identify the percent when given a fraction or ratio.

=
 
For example: A junk box contains 10 markers, 6 pom-poms, and 4 beads.  What percent of the pom-poms is in the box?   Answer:  6          30   = 30%
                                                                             20        100

See you all on Monday!  Have a great weekend!

-Miss K  :)

 

 
 


Thursday, September 15, 2011

Divisibility Rules

Hello, hello, hello!


Today we learned the divisibility rules!  Tonight's homework is to complete the divisibility worksheet.  Can't find your homework or were absent?  Click here to get a printable copy of the worksheet.

First we defined the words Factor, Multiple and Product:


This picture may may the concept clearer:



Check out the rules:


For tonight's homework, you will determine which numbers are factors of various values.  Here's an example of how you complete the homework:  (ps- These are the first four problems...  Feel free to copy them if it helps you learn!)


Now, we only went over a few divisibility rules.  There are many others...

2If the last digit is even, the number is divisible by 2.
3If the sum of the digits is divisible by 3, the number is also.
4If the last two digits form a number divisible by 4, the number is also.
5If the last digit is a 5 or a 0, the number is divisible by 5.
6If the number is divisible by both 3 and 2, it is also divisible by 6.
7
 
Take the last digit, double it, and subtract it from the rest of the number;
if the answer is divisible by 7 (including 0), then the number is also.
8
 
If the last three digits form a number divisible by 8,
then so is the whole number.
9If the sum of the digits is divisible by 9, the number is also.
10If the number ends in 0, it is divisible by 10.
11Alternately add and subtract the digits from left to right. (You can think of the first digit as being 'added' to zero.)
If the result (including 0) is divisible by 11, the number is also.
Example: to see whether 365167484 is divisible by 11, start by subtracting:
[0+]3-6+5-1+6-7+4-8+4 = 0; therefore 365167484 is divisible by 11.
12If the number is divisible by both 3 and 4, it is also divisible by 12.
13

 
Delete the last digit from the number, then subtract 9 times the deleted
digit from the remaining number. If what is left is divisible by 13,
then so is the original number.


And in a cute poem form...

I hope that this helps!  If you forgot to bring in your Hot Pink sheet or didn't get it completed, please bring it in signed tomorrow!  Thanks!!!!

-Miss K  :)

Wednesday, September 14, 2011

Anyone else watching Survivor?

You can try the game that Coach and Ozzy had to play at the beginning of the episode!

Tower of Hanoi Game

I think that they had either 6 or 7 levels...  Try it out by clicking the link above and selecting the number of disks.  Good luck!  Don't let it drive you crazy!

-Miss K  :)

Perspective



-Miss K  :)

Benchmarked!

Great work on the benchmark today!  Everyone finished with no problems!  If you were out today, please let me know when you can make it up.  It should take about 20 minutes and can be finished during a study hall or a lunch period if we need it to be.

Today's homework is to get BOTH SIDES of the hot pink sheet signed by your parent(s)/guardian(s).  If you forgot you pink paper at school, please print out this document and get the signatures!

Is there any other homework:



Have a good night!

-Miss K  :)

Tuesday, September 13, 2011

Hammonasset(t)

I had so much fun today!  I will post pictures in a few days.  Once I get permission from your parents to put pictures up!  Thanks for making today wonderful!  I hope that you all had a great time too!

What was your favorite part of the day?  Leave your answers in the comments!

-Miss K  :)

Heading to Hammonasset!

Aaaaghhhhhhhhh!   I'm so EXCITED!!!!

-Miss K  :)

Monday, September 12, 2011

Ratios

Today we began working with ratios.  We know that a ratio is a comparison of two values set up in one of three ways.

A Fraction...  2/10 or 1/5 shows the ratio of my thumbs to the digits on my hand

Using the word "to"...  The ratio of core classes to related arts classes is 4 core classes to 3 related arts classes

Using a colon...  The ratio of years I was a student at Brown to the years I have been a teacher at Brown is 3:11

Want to know a little bit more about ratios?  Check out this short tutorial on Math.com or this Purplemath.com information.



Your only homework is to get ready for the trip tomorrow.  Remember to bring a lunch, dress in older clothes, bring some mucking around boots and remember to bring in any forms that you didn't get in today!

-Miss K  :)


Friday, September 9, 2011

Thanks for your great work on the patterns today!

So many cool patterns!  I will download the pics from class and post them soon!

Have a lovely weekend!!!!

-Miss K  :)

Thursday, September 8, 2011

Patterns

Happy Thursday to my wonderful new students!  So we started learning about patterns today...  I am sure that you have seen patterns in school and in real life many, many times before, but we get to explore patterns again!

We have seen numerical patterns:

like this simple one:  2, 4, 6, 8, 10, 12.....

and this much more difficult one:  5, 9, 17, 33, 65.....  (By the way, if you think you know the pattern, leave the "rule" in the comment section!)

We have also seen visual patterns:

- = + = - = + =

Designs also have patterns:

  

As you know, your homework tonight is to go on a pattern hunt!

1)  Find a pattern and bring it in.  This should be something that you can give to me, so your backpack or the bottom of your shoes does not count.  I will return the item if you would like it back.  If you have a photo or image that you want to use, you can email it to me at kahrimanisn@madison.k12.ct.us and I will print it out.  Just remember that I will only be able to print in black and white.

Here is the example video from class today:

video


2)  Wear a pattern (or patterns) to school tomorrow.  You can be as simple or as crazy as you would like, but make sure you have at least one pattern on.  Here is an example from last year!


I can't wait to see your patterns tomorrow!  Have a good night!

-Miss K  :)