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…

# Math and Science

# April’s calf was born!

At about 10:00 am, April 15th, April’s calf was born. Everyone will be talking about it and smiling constantly. Here’s some fun math stuff to bring with you for Holiday gatherings. The activity: April’s-calf.pdf For members we have an editable…

# Alarming ice cracks on Brunt Ice Sheet in Antarctica

A new, fast-growing ice crack is forcing the Halley VI British research station in Antarctica (shown above) to be moved. Fear of a huge break-off from the ice sheet is alarming not just to the scientists on the station but to…

# 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…

# New baby giraffe

Willow weighed 125 pounds at birth and was 6 feet 1 inch tall. She will grow to her adult height of around 14 feet tall in only four years! How big would you be if you grew at her rate…

# Will this be a leap year?

Will we have a 29th of February this year? How can you tell? 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…

# Valentine’s Day activities

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…

# 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…

# Earth’s Perihelion

On Wednesday, January 4, 2017, Earth will be as close as it gets to the Sun during its orbit. Shouldn’t that make this the warmest time of the year? In this activity students become familiar with the terms perihelion and aphelion as they calculate…

# Times Square New Year’s Eve ball drop

On Saturday evening, December 31st, 2016 at 12:59 pm, much of the world will be watching the iconic Times Square Tower’s New Year’s Eve ball drop 141 feet to the roof of the One Times Square Building in Manhattan, NY. This…

# Pre-winter holiday activities!

Christmas tree lights – Students first guess how many feet of lights would be required to decorate this tree. The class finds the mean and median of those guesses. Then they brainstorm and refine their guesses. Lastly they figure out how…

# Dark days – Winter solstice

This year’s winter solstice will be at 5:44 AM EST on December 21st (10:44 UTC December 21, 2016). In this geometry/Earth science investigation, we’ve asked students to question the Earth’s latitudinal divisions, recognize its tilt, and appreciate the relationship of these…

# Halloween tricks and treats – 13 activities

How many houses can you get to – It’s Halloween. Time to trick or treat. How long will it take you to get to all of these houses? This is a very open-ended task, counting, trick or treating strategies, distance and more.…

# Columbus and navigation

The Niña Columbus Day is a bit of an enigma that used to be celebrated all through the Americas. Columbus’s mission and arrival are now thought to have not been a noble endeavor in the way that indigenous people were treated. Now,…

# Steepness and fall hiking

Fall is a beautiful time of year for hiking. Many students will be walking in the woods and mountains to enjoy the colorful leaves and the cool weather outside. Let them combine what they are doing with their families and…