Chocolate-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 love – 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.

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.

Sweetheart Candies – unit rate and ratio activity using those little candy hearts.

Where have all the flowers … come 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 …

Valentine 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.

Chocolates – Students estimate volume of various candies by approximating surface area.

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

from Yummy Math http://www.yummymath.com/2017/valentines-day-activities/

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