Valentines and Presidents days

Which Sweet Heart candies are the best deal? - Students decide which quantity of Sweet Heart candies is the best deal.  Ratio tables, unit ratios, devising convincing arguments.

3-d-heart-cakeChocolate-raspberry heart-shaped cake - Students build a heart cake and use ratio information to find the quantities of cake and icing resulting from increased dimensions.

A parametric heart ... with loveExcelParametricHeart - Students use unit triangles and manually calculate sine and cosine of π/2, π, 3π/2, and 2π as they try to graph this great-looking, curvy heart using parametric equations.  We also have them create it using Excel, on a graphing calculator and with online graphing tools.

WeLoveMath-heartSweetheart Candies - unit rate and ratio activity using those little candy hearts.

Where have all the flowers ... come from?where-are-flowers-from - Analyze a pictograph to see what can be deduced.  Cost of flowers in different countries, source of flowers, how many hours you must work to earn a rose ...

cardioidValentine Cardioid - Four ways to construct cardiodes for Valentine's Day.

Holiday Candy Sales - Translate a pie chart of data to actual dollars spent on Valentine's Day candy, Halloween, Christmas, Easter, and Hanukah.

Chocolateschocolate_heart - Students estimate volume of various candies by approximating surface area.

cans-heart2Have a heart - Estimate the quantity of kidney bean cans needed to build this giant heart.  Volume, analysis, collaboration, estimation ...

And for Presidents Day ...

President's Pay1pres1 - Monday, February 16th is Presidents Day. Students learn a little about the holiday as they use the Consumer Price Index (CPI) to calculate "today's value" of the only 6 salaries that Presidents have ever earned ... relative value of salaries, step graphs and more.

+ Don't forget to enter our Share the Love contest to win a year of YummyMath!

Chocolate raspberry (heart-shaped) cake


Students calculate base area or volume of cakes made from 2 cake pan sizes and observe how the volume of the cake changes with the increased pan size.  This is an activity intended to demonstrate that the volume increase is not linear.  Volume expansion would be cubed if all dimensions of the cake were enlarged but in this case (since we didn't increase cake depth) only two dimensions are enlarged.

The activity: Chocolate-RaspberryHeartCake.pdf

Super Bowl, Mardi Gras, Lunar New Year, and Groundhog Day (14 activities)

How have the cost of Super Bowl ads changed?puppy-love - Students analyze and graph our data of all of the previous Super Bowls and decide whether the change in ad cost is linear, exponential, or something else.  Then they predict the cost of the future ads.

Super Bowl Numerals - Roman numerals are rarely taught in our curriculum but they are used in our society.  Give students a chance to do some really cool addition with Roman numerals and refresh their meaning.

Typical Super Bowl scores - Encourage your students to guess what the final Super Bowl score will be.  Analyze the data in class finding the mean, median and range of past game scores.  Then give students the opportunity to correct their predictions.  Follow up after the game.

Year of the Monkey

Chinese New Year. Year of the Monkey

Lunar New Year begins on Monday, February 8th. This will be the year of the Fire Monkey.  The year name is a combination of 10 Heavenly Stems and 12 Earthly Branches creating a sequence of year names that repeat every 60 years. (Don't tell your students this number.)

Students explore the least common multiple of two cycles without ever hearing the term LCM.  They become a little more aware of Chinese culture and the major significance of this annual event, while they “do the math”.

Share the LOVE contest

rosesWin a year of YummyMath!  Send us your poem, a photo, a video, or a paragraph that shows why you or your students like our work or how we've helped your class.  We'll share the best, and be giving away YummyMath pencils, and one one-year free membership to our favorite share.

Submissions:  [email protected]

Winner will be announced on February 15, 2016.

Super Bowl ads

Budweiser's "Puppy Love" commercial from Super Bowl XLIII

Here's one more Super Bowl analysis to motivate your students: 5 million dollars for a 30-second ad.  That is how much a one-half minute commercial will cost during the 2016 Super Bowl game.  Wonder how much it will be in the future?

Students plot the cost of a 30-second Super Bowl ad over the past 49 Super Bowls. How has the cost of a NFL Super Bowl ad changed over time? Has it grown linearly? Exponentially? or what?