Wind chill

The weather forecasters tell us what the wind chill temperature will feel like. How do they figure out that number?

Dudley on a cold and windy day.

In this activity students use the National Weather System chart to gauge wind chill, examine the patterns that correlate increasing wind and/or decreasing temperatures, use wind chill numbers to estimate possible wind and temperature factors, and generally become familiar with this sort of interpolation and calculation.  Also check out this windchill calculator, which you can use to quickly find the windchill for a given temperature and wind speed.

The activity:  WindChill.pdf

Hanukkah is almost here!

Egad, Hanukkah begins this year on Sunday evening, November 28th. I think it was in December last year. Why isn't it always on the same date? Students look at the Hebrew calendar and appreciate the incredible mathematics involved in creating a calendar that aligns both the moon's revolution about the Earth and the Earth's revolution about the Sun.

The activity: hebrew-calendar2021.pdf

Thanksgiving, shopping, football and giving

barbecued-smoked-turkeyHow should I cook my turkey? - Students judge timing, cost, tastiness, and quantity necessary as they plan for the feast. 4.MD.1, 5.NBT.7, 4.MD2, 6.RP.3, 6.NS.3, 7.NS.3  Great video on a deep frying fire with William Shatner.

Lots of Cranberries - In this timely activity, students learn about how cranberries are grown and harvested; estimate their size and quantities; and see what they can deduce from published statistics. 5.MD, 6.RP, 6.SP, 7.G.B, 8.G

Not enough mashed potatoes - Use Brian's famous mashed potatoes recipe to practice changing decimals to fractions; calculating ingredient measure for various-sized Thanksgiving servings; have students explain their reasoning; and to have students figure out how many servings 7½ pounds of potatoes would make. 5.NF.6 , 5.NF.6 , 6.RP.1 , 6.RP.2 , 6. RP.3 , 7.RP.1

2 New Macy’s Parade balloons

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

As the Macy's Parade returns to public viewing, here are two balloons that Macy's artists have added. Can you figure out their dimensions? Macy's give their dimensions in bicycle lengths, taxi widths, and stories tall.  Students use proportional reasoning in this short, but happy, activity.

The activity: 2NewMacy'sBalloons2021.pdf

Shopping season already!

We used to see holiday sales right after Thanksgiving but, surprisingly, holiday shopping has already begun. Sales are advertised everywhere.  Students will be able to add some understanding and analysis to those shopping trips after calculating savings in dollars and percents
with this timely investigation.

The activity: Sales-already.pdf

Veterans Day 2021

On Veterans Day we honor the men and women that have served in the Armed Forces of the United States.  As of the the 2010 Census, there are 18.8 million living veterans. We found these maps that show where veterans live in the U.S.

What do you notice and what do you wonder when seeing these maps?

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