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Yummy Math by Leslie - 15h ago

What's a Mersenne prime?        How hard could it be to find the next one?

Why are there only 50 known Mersenne primes?     What's with \$150,000?

The activity:  NewMersennePrime.pdf

CCSS: 4.OA, 5.OA, 6.EE, 8.EE, MP1, MP5, MP7, MP8

For members we have an editable Word docx and solutions/discussion notes.

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Yummy Math by Oldmanmarks - 4d ago

March Madness is the big 68 team college basketball tournament that takes over our TV viewing during the weekends of March. School and office friends are filling out brackets.  Engage your students in percents as they get excited about March Madness. Is getting a higher seed really an advantage?  Use 30 years of data to help determine for which seeds it makes sense to pick an upset.  Finally, students determine a general strategy for picking games in the first round.

To help students see how seeding shows up in the brackets, show them this image:  Men's Bracket and this close-up: Seeding-magnified.
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For members we have a Word doc, an Excel chart and solutions.

CCSS: 6.RP.3, 7.RP.3

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Yummy Math by Leslie - 6d ago

Green, green river - They're doing it again. In Chicago, the local plumbers union "dye" the Chicago River emerald green.  Students learn the meaning of PPM (parts per million) and  attempt to figure out how much dye is used to sufficiently color the river.

CCSS: 5.MD, 6.RP, 6.G, 7.RP, 7.G

McDonald's seasonally serves its Shamrock Shake for Saint Patrick's Day. Add a little nutrition math to your celebration.  In this post we look at calories, carbohydrates, sugars, fats, and proteins to decide what would be left for our day's meal allotment after we had lunch and a Shamrock Shake at McDonald's.

CCSS: 6.SP, 6.RP, 7.SP

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Yummy Math by Brian And Leslie - 1w ago

March Madness Men's and Women's Brackets

 Clicking on this image will show it larger in a new window. Clicking on this image will show it larger in a new window.

We'll update these blank schedules after the selections.

Sunday, March 11th, is Selection Sunday for the Men's March Madness Tournament.  Monday night, March 12th is the selection night for the Women's March Madness Tournament.  The March Madness bracket predictions can begin.

What are your chances of picking every game? How does the change from 64 to 65 to now, 68 teams in the field complicate things?  How many brackets would you need to fill out to pick every possibility?  How many reams of paper would you need to print all of those brackets?  Let’s do the math!   Also, check out the video below that explores your odds of picking all games in the tournament perfectly.

The math activity: Perfect-Bracket.pdf

CCSS: 6.RP.3d , 7.SP.8 , 8.EE.3 , 8.EE.4, HSS.CP.B.9 , HSF.LE.A.2

For members we have an editable Word docx and solutions.

Note: The last problem in this activity asks students to determine how a math professor came up with a particular probability.  We are not sure how the professor came up with 1/128 billion, we give a few possibilities in the solutions.  The main point of that question is to promote some creative thinking and discussion while students grapple with ways to reach 1/128 billion.

Thanks to Matt Timmins, Newton teacher, for creating the draft of this post.

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Yummy Math by Leslie - 1w ago

Pi Second = March 14 @ 1:59:26

6 possible activities!

Celebrate π in your school and in your math class with activities that demonstrate how π was derived; visually show why π makes sense; show a surprising place where π is used; increase students ability to measure and long divide; applauds the talent of people who can memorize large strings of numbers; and lets students just have fun.

PiDay-ClassOpener - Puzzle to ponder with a surprising outcome.

For members: PiDayClassOpener-solution.pdf

Early in the week before π day, present the challenge of seeing who can memorize the first 100 digits of the number pi.  This is an opportunity for students who have a talent for memorization to shine.  Bring a pie to class as a reward for anyone who can pull it off.     3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679 ...

Activity#2-What is Pi?.pdf - The logic of finding the perimeters of inscribed and circumscribed polygons as the number of sides to the polygons increase.

For members:  Activity#2-What is Pi-solution.pdf

Activity.#3-ApproximatingPi.pdf - Students calculate the perimeters of a 4-sided regular polygon (square) and a six-sided polygon (hexagon); divide those perimeters by the shapes diagonal and approximate π.        For members:  Activity.#3-ApproximatingPi-solution.pdf

Activity#4-measuring-pi.pdf - Students spend a day of class measuring various round items; practicing exact measurements; long dividing their measurements by the radius measurements; and comparing their resulting ratios.     For members: Activity#4-measuring-pi-solution.pdf

Activity#5-HatSize.pdf
-  Hat size is a measure of the diameter of your head ... but how do you measure that ... through your ears?

Activity#6-VariousWaysToApproximatePi.pdf - Let students try their hands at different ways of calculating pi with formulas that have been used to approximate its value.  For members we have: Approximations-Pi-solutions.pdf

GeoGebra has a great demo to show that the area of a circle can be shown as any number of pie slices rearranged into a parallelogram.   The GeoGebraTube Area of Circles applet was created by Anthony Or, Education Bureau, Hong Kong.  Brian made a video to show you how to use the GeoGebra applet or to simply show your math class.

Screencast by Marks from Screenr.com - YouTube

You might also consider some of these timeless yummymath tasks that let students apply pi such as:

 Largest Cup of Coffee Ever! Is this possible? Monster Cake Gumballs galore Pizza deals Penny Wars - which has the most? Huge Key Lime pie
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Yummy Math by Leslie - 2w ago

Use the need for cleanliness during flu season to engage your students.

Clicking on this image will show it larger in a new window.

Does it really matter whether you kill 99.9% of the bacteria or 99.999% of the germs?

In this 3-act activity we've asked students to consider whether these claims about these two wipes' efficacy really make a difference.  We've supplied students with a list of bacteria counts on various surfaces and asked them to calculate how much of a difference these two different percents make in wiping out germs.

This is an excellent opportunity to deal with repeating decimals.  Thanks to Kyle Berry for sharing this image with us!

The Activity: KillingBacteria.pdf

CCSS: 5.NBT.3, 5.NBT.7, 6.NS.3, 7.NS.2.d, 8.NS.1

For members we have an editable Word docx, an Excel sheet with data and calculations, and solutions.

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Yummy Math by Leslie - 2w ago
We have 11 activities for your Oscar week.

Highest Grossing Movies - Let your students develop their own ideas about compounded percent change while they have the opportunity to speak about the upcoming Academy Awards show. Worldwide box office income is compared for the top ten grossing movies of all time. Is total gross the most appropriate way to judge the popularity of a movie?  How does inflation and increasing ticket prices come into play? Inflation rates are used to let students calculate how the money of 1997 compares to the money of 2013. Students see for themselves what exponential growth means.

Do the better movies make the most money - Do the the movies that are nominated for the Best Picture at the Academy Award make the most money?  Ten movies are nominated each year.  Students compare the votes that the last 20 nominated movies received with their worldwide gross in theaters.  Does number of votes for best picture correlate with money earned at theaters?

Opening Weekend - Students compare the data from the "Opening Weekend" gross to the "Total Lifetime Gross (Domestic) of several popular movies.  The activity is accessible for any student who can plot points on a grid, so it could be used for students as young as 4th graders.  Older students can create a line of best fit and equation to model the data and make predictions.  By plotting and analyzing the data students decide if they can, in fact, predict the future.

Pixar vs Dreamworks - Animated films are a billion dollar industry.  The two biggest producers of animated films are Dreamworks and Pixar.  The two have been going head to head for over ten years. So how do they stack up to each other?  Which company is making more money on their films?  According to critics, which company makes the better films?

Cost of movie tickets over time - Students check out the changes in movie ticket prices over the last 30 years. Using a scatter plot (or his data) students analyze rates of change, make predictions about the future ticket costs, guesses about past costs and try to create lines of best fit.

Money making holiday movies - Students analyze holiday movie data. They will round, estimate, compare, calculate percent increase, consider the most appropriate graphical representation and graph the data ... along with sharing what they have seen and enjoyed.

Godzilla - Since 1954 when the first Godzilla movie was made, the creature has grown. Students compare Godzilla's height with the height of recognizable buildings and judge whether his height is accurately portrayed.  Scatter plots, data analysis, sequel predictions.

Rapunzel - Students learn a little bit about the original Grimm fairy tale and a little about the incredible animation in this Disney movie, Tangled. They calculate the weight of Rapunzel's 70 feet of hair and do some converting from meters to feet. This activity lets students use rate and percents as they consider really long hair and a pretty good movie.

How many movies can you see in one day - With plenty of days off from school, plan to spend a day at the movie theater.  You want to see as many movies as possible. Robert Kaplinsky shared this lesson with us. Students are asked to analyze a situation, consider contributing factors, and present a logical solution.

Which is better ... original movies or their sequels? - From our gathered data students debate the question and consider what they can conclude from various graphs and what is an adequate sized random sampling is adequate.

Fantastic Beasts - How much does it cost to make a Harry Potter movie? - In this activity students use the average cost of making a Harry Potter movie to estimate the cost of creating the "Beasts" movie. The task is open, in that it asks students to analyze central tendency, using either median, mode or mean.  Which is the best predictor of the cost of making this new movie?

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Yummy Math by Leslie - 2w ago

The Iditarod Dog Sled Race begins on Saturday, March 4th in Anchorage, Alaska. This long and grueling competition is called the Last Great Race on Earth. Students do some rate, distance, and hardship comparisons to decide if they agree that the Iditarod is really the Last Great Race on Earth.

Dallas Seavey drops down the bank onto the Yukon River shortly after leaving Ruby at sunset in Interior Alaska during the 2010 Iditarod

You could begin this activity with Dallas Seavey's Iditarod introduction movie below.  Dallas has won the Iditarod in 2012, 2014, 2015, and 2016.  His dad, Mitch Seavey won in 2004, 2013 and last year.

The activity: Iditarod2018.pdf

For members we have an editable Word docx and solutions.

CCSS: 5.NBT, 5.NF.B, 6.RP.A, 6.NS,7.RP.A

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Yummy Math by Leslie - 3w ago

Can you tell from its opening weekend how much the new movie, Black Panther, might earn in theaters?  This activity can be used anytime and is especially timely when there is a new blockbuster movie released.  We've left blank spaces in our chart for students to add their favorites or for future movies. The data for this activity can be found at: boxofficemojo.com.  Just click on any movie and look for this info:
Students compare "Opening Weekend" amounts to "Total Lifetime Gross (Domestic)" data to try to  predict how much money the new Black Panther movie (which earned \$203,000,000 in its opening weekend in the U.S.) will make at theaters. This task is accessible for any student who can plot points on a grid, so it could be used for students as young as 4th graders.  Older students can create a line of best fit and equation to model the data and make predictions.  By plotting and analyzing the data students decide if they can, in fact, predict the future.

The Activity: OpeningWeekendBlackPanther.pdf

CCSS: 8.SP.1, 8.SP.2, 8.SP.3, HSS.ID.B.6

For members we have an editable Word docx, an Excel data sheet with charts, and solutions

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Yummy Math by Leslie - 3w ago

Friction, score-keeping, trajectory and weirdness are the main concepts in this activity.  Curling is not a well-understood sport but the science and strategy are easily understood and enjoyed.

Let your students watch this video to get a feel for the sport before they try the activity.

Olympic Curling: How Hard Can It Be? | Winter Olympics 2014 - YouTube

Curling.pdf

For members we have an editable Word docx and solutions.

CCSS: MP3, HS-modeling

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