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 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…

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…

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…

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…

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…

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…

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.…

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,…

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…

Thursday, September 22nd of this year will be the Autumnal Equinox. It is the time of year when the imaginary plane that might pass through the Earth’s Equator would also travel through the center of the Sun. At this auspicious…

To win in Olympic swimming, contestants have to be incredibly fit and have marvelous endurance and technique. Do they also need to consider the science of their motions and their equipment? Could your swimsuit, swim cap and goggles be holding…

Conditions will be favorable for excellent views of the Perseids meteor showers in early to mid-August. Let students read charts, analyze data, work with percent of moon visibility at each phase, and understand apparent magnitude in the night sky with…

Grubs are killing my grass. I don’t want to put poison into the ground. What can I do? There are tiny roundworms called beneficial nematodes. They can kill destructive soil pests in your garden and lawn. They are tiny worms that…

The 2016 Summer Olympic games won’t begin until on August 5th of this year but already the Olympic Torch has been lit and is traveling to the game’s site, Brazil, by 12,000 relay participants. Watch the lighting video and wonder…