### Ratio and Proportion

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#### 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...

#### Father's Day and Juneteenth; 3 Activities

For Father's Day (Links to different activities) Thank you Mother and Father for all of those diapers (2015) - Students compare the cost of buying disposable vers...

Jennifer Fairbanks from Hopkinton, MA sent us this picture of the cookies that she baked in 4 hours using 13 eggs and 5 cups of sugar. Do you see some math here? Do you have an add...

#### A&W's bigger burger

﻿ A&W offered a bigger, tastier burger but it didn't succeed in grabbing customers away from the hugely popular McDonald's quarter pounder. The A&W third pounder...

#### How much chocolate is left?

In this short activity, students reason and calculate what is left of these chocolate bars.  The bars are the same size but are molded into different number of sections.  Which one has...

#### Drill bit fractions

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 black...

#### Population Clock

How in the world does this clock conclude that there is a net gain in the United States of one person every 14 seconds? Have a little care about younger children when using this activity. T...