The Iditarod Dog Sled Race will begin this year on Saturday, March 7^{th} in Anchorage, Alaska. It is often called The Last Great Race on Earth because it is so long and grueling. Students do some rate, distance, and hardship comparisons to decide if they agree that the Iditarod is really the Last Great Race on Earth.

## How many delegates does each state get to send to the Democratic Convention?

Texas gets to send a lot more delegates to the July National Democratic Convention than New Hampshire does. How do they figure out what each state's fair number of delegates should be? What are those weird abbreviations in the allocation formula above? **Do the math!**

## Gonna be a Leap Year

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This year we will add the 29th of February to our year? Why do we do that? How can you tell? What if we didn't add a day every 4 years?

Students work with a flow chart to deduce what years are going to be leap years. They learn about the exact measurement of a solar year and how our Gregorian calendar needs to be adjusted to accurately align the calendar with the Earth's revolutions around the Sun.

## Mardi Gras or Fat Tuesday

Tuesday, February 25, 2020, will be the day before Ash Wednesday and the start of the season of Lent. Mardi Gras is a last hoorah and is celebrated throughout the world with feasting, partying, and general indulgence. In New Orleans revelers throw and collect purple, green, and gold beads.

Students get a chance to examine the monetary and environmental cost of this bead exuberance with our unit pricing and recycling activity.

## K-Pop and BTS, how much can they earn from Youtube and Spotify?

Bring a little K-pop music to your class with this activity.

Jason Kibbe, a terrific middle school math teacher in Chambersburg, PA, sent us an activity that he created for one of his students. His student adores the Korean K-pop boys band, BTS.

What do you think of this group? How much could they possibly earn on Youtube?

## Valentine’s Day + NBA All-Star Voting + Presidents’ Day

How does the voting for the NBA All-Star team work? Updated for 2020! Fans, the media, and the players vote for who should be on these teams but how are their total votes computed? Evenly? Weighted? What formula does the NBA use to determine who is an All-Star? 6.EE.2, 7.EE.3, HSA.SSE.A.1 | Have a heart Canstruction Estimate the quantity of kidney bean cans needed to build this giant heart. Volume, analysis, collaboration, estimation ... MP1, MP2, MP3 | 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. HSG.SRT, HSF.TF |