### Ratio and Proportion

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#### It's almost summer now

How much water do you have to drink?   In this activity student develop formulas for calculating their water needs, learn about the effects of too little wat...

#### Will I pay less if I buy more?

image designed by macrovector / Freepik This activity can be used in a large range of grade levels.  Your class can work on percents, ...

#### The Moroccan Earthquake and the Richter scale

Friday evening, September 8th, a powerful 6.8 magnitude earthquake hit Morocco southwest of Marrakech. What does a 6.8 magnitude earthquake mean?  How powerful was that...

#### This shoe is huge!

Brian and his son were doing some shopping when he found this shoe.  Egad!  Could that be someone's real shoe? In this activity student use a shoe size chart, patterns or linear modelin...

#### Ice Cream Day - July 16th; 2 activities

All the ice cream that you can eat   All the ice cream that you can eat for only 10 cents!  Wow, that's a great deal!  How great a deal was tha...

#### Can Joey and Miki do it again?

Updated !              The MLE - Major League Eating is a World organization that oversees speed eating contests. Entrants to the various competitions must be...

#### Earth Day (April 22) Actions for Our Planet

<a href="https://www.freepik.com/free-photo/watercolor-textured-blue-background_15559582.htm#fromView=search&page=1&position=22&uuid=5c957d6a-8767-4ae9-9522-cdefcf4825b7">Image by ra...

#### Wind chill

The weather forecasters tell us what the wind chill temperature will feel like. How do they figure out that number? In this activity students use the National Weather System chart ...

#### I need help raking my leaves

Brian has spent too much time thinking about his leaves. He's worried about raking them alone and thinking about how long the job would take if people helped. In this activity students see the inve...