Act One: Drill bits are measured by the diameter of the bit in inches. The drill bits below are ordered left to right in increasing size. The numerators in the fractions have been blacked out. What could the numerators be? Explain your…

6 activities! Peeps – Students estimate the number of Peeps sold each Easter season. They consider reasonability by making guesses they think might be too high and too low. Students determine necessary info, problem solve and improve their original estimates. They conduct random samplings…

Super Bowl Cheesy pretzel poppers – Students follow a recipe that involves cutting a block of cheese, figuring how many servings, estimating how many times they need to multiply the recipe by to make enough pretzel bites, and multiplying and reducing…

Data on the National Mall sites – Two data analysis activities about the National Mall. Who do we honor? – What people or events are included in the National Mall monuments? Students use fractions or percents to decide what they can notice…

Winter Solstice – Students appreciate how their latitude effects the darkness of their late afternoon location as they study the earth’s tilt and the logic of daylight hours. 7.G.3, HSG.C, HSG.GMD.4, HSG.MG.1 – Updated for 2018! Soda Santa – First students guess too…

Not enough mashed potatoes – Use Brian’s famous mashed potatoes recipe to practice changing decimals to fractions; calculating ingredient measure for various-sized Thanksgiving gatherings; have students explain their reasoning; and to have students figure out how many servings 7½ pounds of…

One more – Operation Gratitude – Halloween Candy Buy Back – Dentists often offer $1.00 per pound for non-opened Halloween candy. The candy is donated to Operation Gratitude which gives thank you gifts to soldiers and first responders. Is this…

Thank you Mother and Father for all of those diapers – Which is a better deal, cloth or disposable diapers? How much did you cost your parents in diapers? In the future how much could your kid’s diapers cost? Help…

Justify has won the Triple Crown. He’s the 13th horse to ever win all three races … Kentucky Derby, Preakness, and the Belmont Stakes. Amazing! How do you calculate compound probability? Skip the betting odds and deal only with the…

Justify won the Preakness – Can he win the Triple Crown? This past Saturday was the running of the Preakness Stakes Thoroughbred horse race in Baltimore, Maryland. The Preakness is the second major race for 3-year old thoroughbreds to run…

In this activity students decide how to divide 2 pizzas amongst 6 adults and 3 pizzas amongst 8 kids. Fractional pizza parts need to be drawn and considerations discussed about which fractions are greater. Students interpret a fraction as division…

You have probably heard about the proposed border wall that may go up along the U.S./Mexico border. How much wall needs to be built? How much will that cost? What is that per mile? Per foot? What else could you…