Category: Ratio and Proportion

Winter and holiday posts (14 16 great activities)

Soda Santa

Winter Solstice – Students appreciate how their latitude effects the darkness of their late afternoon location as they study the earth’s tilt and the logic of daylight hours. 7.G.3, HSG.C, HSG.GMD.4, HSG.MG.1 –  Updated for 2018! Soda Santa – First students guess too…

Shipping Crunch

Now that the shopping season has begun, it’s time to get the packages to your homes.  Two big companies take care of a lot of that shipping.  How do they manage that? The mechanisms for these two shipping giants are…

Weird wing prices

Clicking on this image will show it larger in a new window. Danny’s Wok in Philadelphia has a huge price list for ordering their famous chicken wings. Why did they write the prices this way? Do you see a pattern?…

Black Friday Deals

When shopping next Friday, students will be able to add some understanding and analysis to the trip after calculating savings in dollars and percents with this timely investigation.

Fine

TJ Watt was fined for roughing the passer.  Check out the tweet from Darren Rovell and engage your students in a familiar context for a classic percent problem – solving for the “whole.” JUST IN: @_TJWatt lost 38% of his…

Debt and deficit

The growing deficits of our government and accumulated debt are constantly in the news. Allow your students to investigate these concepts and their causes with this timely activity. The activity involves reading charts, making comparisons, computing percents and analyzing trends…

How huge could this mid-term election be?

Will November 6th election bring record number of voters to the polls? Students get a chance to understand what the usual percentage of voters is, look for trends and central tendencies, and make predictions about this year’s voter turnout. The…

Big bucks

Giancarlo Stanton and Wayne Rooney signed big contracts in 2016, paying each of them millions.  Lets take a look at some of the world’s biggest sports contracts from the NBA, NHL, NFL, MLB and European Football (what Americans call soccer).  We often…

Really big pumpkins and pie

Let your students marvel at World Record winning giant pumpkins as they use proportions to calculate the quantities of pumpkin puree and the number of pumpkin pies that could be made from one of these giants.  To introduce the task…

Columbus’s progression across the Atlantic

The Niña Columbus Day is a bit of an enigma that used to be celebrated throughout all of the Americas. Indigenous people were not treated well by the European colonization that began with Columbus’s voyage. For that reason, many U.S.states…

Back to school activities

Who’s going back to school? – Students calculate the historical changes in U.S. population percentages of people who are going back to school and try to formulate reasons for these variations. 6.EE, 6.RP.3, 6.SP, 7.EE, 7.RP.3, 7.SP Does it pay to get…

Does it pay to get educated?

Updated! Why should students do well in school, graduate high school, or go on to college?  In this activity median earnings by various education levels are explored.  Students compare the earnings of a non-high school grad with workers who graduated…

Hurricanes

The official Atlantic hurricane season started on June 1 and doesn’t end until November 30th. Now Hurricane Florence is approaching North and South Carolina. Encourage your students to join the conversation, knowledgeably, by using our activity.  Students read about hurricane classfications and…

Monarchs are flying south again

In mid-August and early September, the Monarch butterflies begin their annual migration south to more moderate climates to hibernate and overwinter.  It is an incredibly long migration and fascinating to observe.  But, the populations data on Monarchs has seriously changed…