Screencasting: How do you turn a Fraction into a Number?

Screencasting: Probability

Screencasting: Equivalent Fractions

Screencasting: What's the Probability?

Screencasting: Comparing Fractions

Screencasting: What are Equivalent Fractions?

Screencasting: Fractions

Screencasting: What is One?

Zucchini Bread Recipe Problems

Intro

Hi, I’m Aram, and we are learning about solving real-life cooking problems. I made these problems so you can try out the problems that we are doing.

Amounts

Sugar: 2/3 cup

Crushed pineapple: 8 ½ cups

Problems

Problem 1:

Bob needs to make 10 loaves of zucchini bread. How much sugar does Bob need (not powdered sugar)?

Problem 2:

Rick forgot to buy crushed pineapple.  The cans of crushed pineapple are 17 oz. cans. If Rick is making 2 loaves (1 batch), how much crushed pineapple is left over?

Leave your answer below in the comment section.

Peanut Butter Pretzel Cookie Math

Hello. My name is Adam and I’m studying word problems. Today I’m going to show you how math can help you in real life.  This is also why I made these problems. Now here are some examples.

PROBLEM # 1       Q. Fred wants to bake Peanut Butter-Pretzel Cookies for his party. He wants to have to start baking as late as possible. One batch makes 48 cookies and takes 30 minutes to cook. If the party is at 2:30 and 240 people are coming to his party and each person will want one cookie, what time does he have to start cooking?

PROBLEM # 2     Q. Grace loves Peanut Butter-Pretzel Cookies. If she sees her sister add 14 cups of crushed mini pretzels, and there are 2 cups of crushed mini pretzels in one batch, how many batches is she making?

Comment with your answer. We'll be back with the answers later.  

We're back!

It's a new school year and we're back with a new group of awesome fourth grade blog contributors. First up, some cooking problems. Next up salaries and taxes and other "grown up" sorts of things. Let us know what you think!

The Beating Stick Math Team

How long do you live?

How Long You Really Live

Hi, my name is Angelina, and I’m going to teach you how many hours you live, how many minutes you live, how many days you live, etc.

            Everybody lives for about 75 years in a lifetime. To find out how many days you live, you would do 75 (years you live) x 365 (days per year), and it equals 27,375. Therefore, you live for about 27,375 days. To find out how many hours you live, you would have to multiply 27,375 (days you live) by 24 (hours per day), to equal about 657,000 hours in your lifetime. Next, do 657,000 (hours you live) by 60 (minutes per day) to find out how many minutes you live, and 657,000 x 60 = 39,420,000 minutes in an average lifetime. Finally, multiply 39,420,000 (minutes in a lifetime) by 60 (seconds per day) to equal 2,365,200,000 seconds you live in your lifetime.

Here is the chart to show you how many years, days, hours, minutes, and seconds you live:

Years	Days	Hours	Minutes	Seconds
75	27,375	657,000	39,420,000	2,365,200,000

The Next 50 Fibonacci Numbers

It's Angelina again and here's the next 50 Fibonacci numbers.

Next 50 Fibonacci Numbers

51     20365011074 

52     32951280099 


53     53316291173 


54     86267571272 


55     139583862445 


56     225851433717 


57     365435296162 


58     591286729879 


59     956722026041 


60     1548008755920 


61     2504730781961 
                                            

62     4052739537881 


63     6557470319842 


64     10610209857723 


65     17167680177565 


66     27777890035288 


67     44945570212853 


68     72723460248141 


69     117669030460994 


70     190392490709135 


71     308061521170129 


72     498454011879264 


73     806515533049393 


74     1304969544928657 


75     2111485077978050 


76     3416454622906707 


77     5527939700884757 


78     8944394323791464 


79     14472334024676221 


80     23416728348467685 


81     37889062373143906 


82     61305790721611591 


83     99194853094755497 


84     160500643816367088 


85     259695496911122585 


86     420196140727489673 


87     679891637638612258 


88     1100087778366101931 


89     1779979416004714189 


90     2880067194370816120 


91     4660046610375530309 


92     7540113804746346429

93     12200160415121876738

94     19740274219868223167

95     31940434634990099905 


96     51680708854858323072

97     3621143489848422977

98     135301852344706746049

99     218922995834555169026 


100   354224848179261915075

Can you tell we like Fibonacci numbers? We've learned some really neat stuff about it and we'll be sharing even more soon. Stay tuned!

First 50 Fibonacci Numbers

I'm Angelina and Will's post about Fibonacci Numbers inspired me to find out the first 50 in the series. I did the math for all of them and it took FOREVER! Okay, not really forever, but it took a looooong time. Here they are:

 Start    0

 1st       1

 2nd      1

 3rd      2

 4^th        3

 5^th        5

 6^th        8

 7^th        13

 8^th        21

 9^th        34

 10^th      55

 11^th      89

 12^th      144

 13^th      233

 14^th      377

 15^th      610

 16^th      987

 17^th      1597

 18^th      2584

 19^th      4181

 20^th      6765

 21^st      10946

 22^nd      17711

 23^rd      28657

 24^th      46368

 25^th      75025

 26^th      121393

 27^th      196418

 28^th      317811

 29^th      514229

 30^th      832040

 31^st      1346269

 32^nd      2178309

 33^rd      3524578

 34^th      5702887

 35^th      9227465

 36^th      14930352

 37^th      24157817

 38^th      39088169

 39^th      63245986

 40^th      102334155

 41^st      165580141

 42^nd      267914296

 43^rd      433494437

 44^th      701408733

 45^th      1134903170

 46^th      1836311903

 47^th      2971215073

 48^th      4807526976

 49^th      7778742049

 50^th      12586269025

Maybe you can come up with the next 50...or maybe not! :)

How Many Seconds?

Hi I'm Will. I was interested in how many seconds were in different periods of time. So I figured it out.

1 minute = 60 seconds
1 hour = 3,600 seconds
1 day = 8,640 seconds
1 week = 604,800 seconds
1 year = 31,556,926 seconds
5 years = 157,784,630 seconds
10 years = 315,569,260 seconds
50 years = 1,577,846,300 seconds
100 years = 3,155,692,600 seconds
1,000 years = 31,556,926,600 seconds
10,000 years = 315,569,260,000 seconds
100,000 years = 3,155,692,600,000 seconds

WOAH!

What do you notice? Do you see any patterns? How did I figure this out?

Read This! Monster Money Book

I'm Miranda and I read Monster Money Book by Loreen Leedy.

This book is mostly about money. It talks about how to save money and teaches you different money vocabulary like deposit and savings. It also teaches how to add money and coins. This is a good book if you want to learn how to be money smart.

Roman Numeral Fun

Here are some common Roman Numerals:

I = 1
II = 2
III =3
IV = 4
V = 5
X = 10
XII = 12
L = 50
C = 100
D = 500
M = 1,000

You can even do basic math with Roman Numerals:

I x L = L (50)
X + X = XX (20)
L + C = LC (150)
I + V + X = XVI (16)

These are Roman Numerals. Usually Americans would use Arabic Numerals (1, 2, 3...) but there's an older number system, it's Roman Numerals! They were made in Greece. Even though we normally use Arabic Numerals, we sometimes see Roman Numerals. For example: we write World War I and World War II instead of World War 1 and World War 2. Using Roman Numerals can be fun, give it a try!
--Morgan and McKenna

Interactive Probability Game

My name is Will and I am teaching how to figure out the probability of you picking different cards out of a bag. I am teaching this with a PowerPoint (which my teacher turned into an easily downloadable PDF file). I chose to teach it this way because it's interactive and a teacher could go as fast or as slow as she/he could manage with his/her class. I liked making this PowerPoint because I wasn't working on math worksheets (haha).

Click here to view the game

*Beating Stick Math Team Note: This game could be used whole class to reinforce basic probability concepts. It could also be used in small group centers. Another option would be to print the slides. Please feel free to use this game anyway you see fit. If you find a new and creative way to use it, please leave us a comment telling us how you used it.

What is a Fibonacci Number?

A Fibonacci Number is a part of a set of numbers adding up the number before them starting with 1 + 1. The sum is the next number in the series.

Here is an example:

1 + 1 = 2
2 + 1 = 3
3 + 2 = 5
5 + 3 = 8
8 + 5 =13
13 + 8 = 21
and so on...

Can you figure out the next ten Fibonacci numbers in the series? Post your answers below.

Thanks,
Will

Video Preview: Percentages

We are learning about percents. To show our learning we are making a video about tips and tax at a restaurant. We are giving you a little sneak peek of our video. So, four people go to a restaurant and buy orange juice, two sodas, a fruit bowl, mini hotdogs, steak mashed potatoes and peas, pizza and fries,  a sandwich and fries, burger and fries, 3 doughnuts, pie slice, and ice-cream. If the subtotal is $36.00 and pay 7% tax and we leave a 15% gratuity (a fancy word for tip), what is the total cost of our dinner?

Post your guesses in the comments below, and stay tuned for our video.

Thanks,

Caroline, Cal, Morgan, Albert, Justin, Michael