Pi Day Activities
5 Activities for π day! What is π? The logic of finding the perimeters of inscribed and circumscribed polygons as the number of sides to the polygons increases. Good in...
Holidays
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Grade
Lunar New Year 2026
The 2026 Lunar New Year falls on Tuesday, February 17. In this updated activity, students will explore the unique naming system of the Lunar New Year, which combines the Heavenly Stems and Earth...
Valentine's Day Activities (List)
Celebrate Valentine’s Day with our activities: Have a heart (Canstruction)Students use reasoning and approximation to analyze the number of cans of food contained in this one giant heart. ...
Macy's Thanksgiving Parade (2025)
🎈Get excited for Thanksgiving with this updated Macy’s Thanksgiving Day Parade activity! Students explore this year's parade map to find the number of parade blocks, use the map’s scale to deter...
The greatest amount of chocolate
In this updated activity, students compare three chocolates that look almost the same size to see which one actually gives the most chocolate. Depending on their grade level, they’ll use differe...
Holiday Movies
In this updated activity, students will explore box office data for top-grossing Christmas movies to analyze and compare earnings. They'll practice skills like rounding, estimating, calculating di...
How much does America spend for Mother’s Day?
Updated in April 2026 with new data; see the answer key.How much do we spend on Mother's Day? Use the Mother's Day event to engage your students (as a class) in approximating, reasoning, and investiga...
Leslie's Yummy Pumpkin Pie
Every year more and more people come to our house on Thanksgiving morning for my (Leslie's)famous pumpkin pie and a hike in the nearby woods. This year 23 people have already accepted. How man...
Will this be an El Niño winter?
The Oceanic Niño Index (ONI) started to show changes to the Pacific Ocean surface temperatures in April and May of this year. Those temperatures are still rising which is a marker for the ...
Will sending you back to school this year cost a fortune?
This activity is scheduled to be updated in August 2026. Stay tuned! With high inflation rates, supply shortages, and rethinking what is essential spending, back to school spending might be diffe...