Anne's Scribe

Today we learned about multiplying fractions. We made a pamphlet yesterday and filled in boxes. In one particular box we talked about Standard Algorithim and Array Models to help us multiply fractions easier and with better understanding.

In that box we learned about making ugly fractions into friendly fractions. How to do that was to take an ugly fraction (for example) 20/33 x 11/30. Those are what you can call ugly fractions! To make it easier for you and other people, you can just do a numerator swap (as Mr. Harbeck says) with the 20 and 11. So now your fraction is 11/33 x 20/30.

Now you can simplify both fractions. 11/33 can be simplified into 1/3 because 33 can be divided by 11, and 11 can be divided by 11. Or, 11 can fit into 33, 3 times. Or another way to show that it can be changed into 1/3 is because 11 and 33 is divisble by 11. 20/30 can be simplified into 2/3 because they are both divisible by 10. 10 fits into 20, 2 times. 10 fits into 30, 3 times. How hard was that?!

Now the final step is to get both fractions and multiply them. Now you are ended up with a much more easier and pretty fraction. Get ready for extreme multiply makeover! 1/3 (11/30) x 2/3 (20/30). Since we already talked about multiplying fractions by using cross multiplying we can now get a fraction without having to multiply large, ugly numbers. Wasn't that easy?!


click for a picture http://www.freewebs.com/annev/math.JPG

Anne's 2nd Growing Post

QUESTION 1
What were the strategies needed?
the strategy i mainly used was the ratio table method. Within the ratio table, there are multiplication and division strategies as well.

How did you use these strategies?
Or how could you of used these strategies.
i used these strategies for figuring out the cups or price or amount of ingredients. Like say to get from 2 2/5 to 12 cup mix. You have to times by 5. Thats the ratio multiplication strategy.

How would you figure out the price of a 6 cup bag of BSM? use a ratio table.

Find 3 other values (amounts of Snack Mix) that could be solved using the same ratio table. Find the $$ of your new container sizes.

we can have 4 cups. the price would be $6 since we divide 12 cups into 3.
we can have 8 c ups. the price is $12 since we times 4 cups by 2.
we can have 16 cups. just add 12 & 4 cups, or times 8 cups by 2. the prive would be 24 dollars

QUESTION 2
You are going to create a voicethread explaining the strategies you used on your test. You need to choose 4 out of the 6 questions.
(1). 2/3 + 1/4 + 2/5 =
(2). 6/5 + 11/10=
(3). 3/5 + 2/7 =
4. 1/6/+1/9 =
(5). 5/6 - 1/4 =
6. 3 3/5 - 1 4/5 =
*You can use the clock method for all those 4 circled numbers.
I recommend the following. Choose your 4 questions. On plain pieces of white paper redo them like you did on your test. Make sure your drawings are large enough. Take a picture of them and save them to your desktop. Upload these images to voicethread and embed your voicethread into your blog.
At voicethread you need to describe what you did to solve the problems. How did you use clocks, money etc to solve the questions. You need a minimum of 2 comments on each picture.Here is a video explaining how to make a voicethead and embed it into your post. You should have both of these questions done by the end of the weekend.

QUESTION 3 & 4