Order of Operations

This week in math we're learning about the Order of Operations.

Numbers 

and Operations

in a Formation...

Watch this video and you'll see what I mean!

Do NOT blame me if that song is stuck in your head until 2034.

Many things in math are not up for interpretation. We need to agree on certain math rules in order for  for humans to calculate numbers and communicate accurately.

For example, if you are ordering new carpet and the guy at Carl's Carpet Center asks you what the square footage of your bedroom is, you should both have an understanding of area. If you calculate differently, you may end up with too much or not enough lime green wool shag. (I had lime green shag carpet in my bedroom when I was your age, so don't laugh.)

"The Order of Operations is very important when simplifying expressions and equations. The Order of Operations is a standard that defines the order in which you should simplify different operations such as addition, subtraction, multiplication and division. 

This standard is critical to simplifying and solving different algebra problems. Without it, two different people may interpret an equation or expression in different ways and come up with different answers. The Order of Operations is shown below." (algebrahelp.com)

What's the difference between parentheses and brackets?

Sometimes parentheses are called "round brackets" because of their shape.

( )

Square brackets remind me of staples that hold the numbers together.

[ ]

When dealing with parentheses and brackets...

For more information, games and other resources, click the links below!

Cool Math

Khan Academy

Dad's Worksheets

Order of Operations Game 

Watch this video for a review!

KCFM... Your Station for Fraction News!

This week in math we learned how to divide fractions. Luckily it's as easy as remembering a cool radio station name.

Here's how it works:

                    Keep the first fraction the same.

                    Change the division sign to a multiplication sign.

                    Flip the second fraction.

                    Multiply across.

Get it?

This 2 minute movie will show how it's done:

Now, when you divide fractions by whole numbers or vice versa, just remember to put the whole number over 1 to easily change it into a fraction. You have to do this to help with the Flip and Multiply steps.

If the whole number comes second in the equation, you'll have to do what we at KCFM like to call The Whole Number Flip. 

It's the latest craze.

CLICK HERE for a catchy tune to help you remember the steps!

DIVIDING FRACTION GAMES!

Math Playground

Moonshot

Word Problems

Mathman

Tune in tomorrow for more math fun!

And thanks for listening to KCFMmmmmmmmm...

It's Called the Voluuuuume!

This week we're taking a break from fractions... 

and learning a thing or two about VOLUME!

First, here is a mini-lesson on finding VOLUME.

To summarize, please enjoy this happy video (and turn up your speakers).

I'm sorry if you sing this song for the rest of your life.

Don't you forget the 3...

make sure it's cubic units!

 

 9 + 9 + 9 = 27
9 x 3 = 27
3 x 3 x 3 = 27

 

When counting cubic units to find volume,
don't forget the hidden cubes!

Here's the formula to file away in one of your brain folders:

Let's practice...

Just grab an object shaped like a rectangular prism and a ruler!

Click here for a cool flipbook to help you remember the formula for VOLUME. Make sure you add them to your math spiral and that your notebook is up to date.

This is what the flipbook will look like once it's glued in...

...and check your email for the notebook page!

Haaaaaaaaapyyyyyy...

Using Al Gore Algorithms to Multiply

Fifth graders are kicking off their math year with  
multiplication algorithms. 

No not Al Gore. 

I said, "AL-GOR-ITHMs."

 

The algorithm we're dealing with today will help us to solve multiplication problems in 4 steps.  

X the Ones

Magic Zero

X the Tens

Add 'em Up! 

This video will help explain in more detail...

Let's try it...

          

This year, it will be helpful to solve problems on graph paper, so that you line digits up correctly. Click on the image below to download printable graph paper! 😄

If you are having a hard time with this concept because you don't have the multiplication facts memorized, please feel free to add this multiplication chart to your spiral. You will use it A LOT this year!

Citing Multiple Sources

When we answer questions completely, we do 2 things…

Make a claim.

Cite evidence  from a source to prove our claim is correct.

WHAT IS THIS GIRL'S CLAIM?

WHAT EVIDENCE DOES SHE HAVE TO PROVE HER CLAIM?

Let's practice.

(click any graphic for a closer look)

Now, if you really want to prove your claim...

HULK UP YOUR RESPONSE

BY CITING MULTIPLE SOURCES!

QUESTION:

Is it important for school age children to 
get a good night's sleep?

Here are two sources to help you with your claim.

Before you answer, where is the evidence?

Can you find helpful evidence in both sources?

Add this handy printable to your SLASH notebook.

Then when answering an open-ended question, use the

CITING MULTIPLE SOURCES ORGANIZER!