Click here to see the Population Clock bigger in a new window. How in the world does this clock conclude that there is a net gain in the United States of one person every 14 seconds?
Population Clock
Tag Archive for 6.RP
Water saving toilets
How much water is used? How much water could be saved? The activity: PottyTime-SavingWater.pdf CCSS: 5.MD.1, 5.NBT.7, 6.RP.3, 7.RP.3, MP2
Columbus Day and navigating into the infinite-looking ocean
The Niña Columbus Day is a bit of an enigma that used to be celebrated throughout all of the Americas. Columbus’s mission and arrival are now thought to have not been as noble an endeavor in the way that indigenous people were…
Perseids meteor showers coming soon
Catching a productive meteor shower can be a stunning experience. On the evenings and mornings of August 11th and 12th there is hope of a good show. A three-quarters moon will make the night sky too light to see the…
Who’s going back to school?
Updated! In this investigation students calculate the percentage of the U.S. population (current and historically) that are enrolled in K-12 schools. They are asked to draw conclusions from these variations. Finally, they use their calculations to predict the number of…
Memorial Day 2017
This Monday Americans will celebrate Memorial Day. Who are we honoring? How did the holiday come about? Isn’t Memorial Day usually on May 30th? Students learn a little about the history of the holiday, analyze the possibilities for when it is…
Earth Day, 2017
Saturday, April 22nd is Earth Day There is so much to bring to your classroom to support recycling, conserving resources, studying climate change and protecting our planet. McDonald’s moves toward Antibiotic-free chicken – What will the effects be on costs at the restaurant, costs in…
Patriots’ Day
In Massachusetts, April 17th will be a holiday from school and work in Massachusetts. We celebrate Patriots’ Day on the 3rd Monday in April to commemorate the beginning of the Revolutionary War and the battles of Lexington and Concord. We…
Saint Patrick’s Day, March 17th
Green, green river – They’re doing it again. In Chicago, the local plumbers union “dye” the Chicago River emerald green. Students learn what PPM (parts per million) means and attempt to figure out how much dye is used to sufficiently color…
Mardi gras – Fat Tuesday
Tuesday, February 28, 2017, 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…
Sweetheart candies
Here’s some more Valentine’s Day fun. How many dollars worth of sweet hearts candies are sold each Valentine’s season? What more could kids want than Sweetheart candies, problem solving, critical thinking, and number sense reasoning? Enjoy!
Possible activities in honor of Martin Luther King, Jr
Time lines for life and work of Martin Luther King, Jr. – Two timelines that show the rate and spacing of progress. One timeline about events and accomplisments of Martin Luther King, Jr Second timeline about the progress made in America, so…
At least the days are getting longer
What’s your guess as to how fast the number of daylight hours will change each day from now until June 21st? Will the changes be dramatic? Will the lengthening days be only a subtle change? Students make guesses; compute how…
Is the Electoral College unfair?
Show your students this really cute segment comparing how the Electoral College functions in our elections to what students think is fair and just. From the New York Times, Electoral College 101. After showing the video consider asking your students what the grouping…
Big Aussie tomato
These Aussi tomatoes (the tomato on the left of all of the tomatoes) are huge. How much do you guess one weighs? Can you figure it out?