Students use our lego measurements to underestimate and over estimate this giant firefighter’s construction time and LEGO block quantity. Then students average their class estimates and compare to the real time and and quantity.

Saturday, September 23, 2023 at 06:50 UTC (2:50 am EST), will be the Autumnal Equinox. It is the time of year when an imaginary plane would pass through both the Earth’s Equator and the center of the Sun. We have 3 activities to use during this event.

The first round of Group play has finished and now the remaining teams start the second round of play. The teams have already played a lot of matches. How many? And, how many matches are left?

To see this poster larger in a new window, click on the image. In 2017, Old Dominion Freight Line offered 2 free tickets to the next 3 World Series to the person who guesses closest to “How many baseballs are…

Listen to students initial thoughts as they wrestle through what “bigger” means … length? height? wheel-base? volume? Come up with guesses that are too high and too low. Show that the average of guesses is pretty close to actual.

Updated! How much do we spend on Mother’s Day – Use the Mother’s Day event to engage your students in approximating, reasoning, and investigating as students estimate how much is spent in the United States for Mother’s Day. For what…

An Einstein aperiodic tile has just been discovered. Find out what that means and why it is significant. Plus – play with the tiles. Do you want to tile your shower floor with these? Could a tile setter pull this off?

We have 16 activities that you could use for Earth Day! Saturday, April 22nd is Earth Day. Help your students become activists for our planet? We have 16 activities that support recycling, conserving resources, awareness of climate change and protecting our planet.…

This day is known for pranks and puzzles. Try one of these 4 activities on April Fools Day. Ask students to analyze where I made my mistake PerplexingProblem.pdf For members we have solutions. PerplexingProblem-solution.pdf …

We have 3 Saint Patrick’s Day activities for your math class. How hard is it to find 4-leafed clovers, the nutritional values of a Shamrock Shake, and measuring parts per million (ppm) of dyeing the Chicago River green.