Ratio and Proportion

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Wind chill

Algebra Number Sense Science Ratio and Proportion
  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 to ...

Whole lot of cookies

Algebra Number Sense Food Holidays Ratio and Proportion Wow factor
This activity has been updated -- See the updated activity HERE

Lots of Cranberries

Geometry Food Holidays Ratio and Proportion
 The harvest must be nearing completion now and growers are selling their product to make cranberry juice, jelly, sauce, and of course, fresh berries in time for Thanksgiving. In this activit...

How big could this mid-term election be?

Number Sense Social Studies Current events Ratio and Proportion Probability and Statistics
Will the November 8th 2022 election bring record number of voters to the polls? Students get a chance to understand what the usual percentage of voters is, look for trends and central tende...

I need help raking my leaves

Algebra Number Sense Current events Ratio and Proportion
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 inverse...

Inflation and the cost of gasoline

Algebra Number Sense Science Social Studies Ratio and Proportion
 In 1980, one gallon of gasoline costs $1.22.  Today's prices are a lot higher.  Is that because the price has gone up or because in 1980 you could buy a lot more than you can buy today...

How much caffeine are you consuming?

Algebra Number Sense Science Food Ratio and Proportion Wow factor
   Did you know that there is an amount of caffeine that is too much for the growing brain of a teenager?  We did some research and have asked students to examine the sources of caffei...

Willy Makeit or Betty Wont

Number Sense Geometry Ratio and Proportion Funny Wow factor
I have to go to the bathroom pretty badly. I have to admit that I have been holding it in for a while.  Finally!  I see a bathroom sign!  Wait ... it is in kilometers?  How...

Hexadecimal coloring

Number Sense Geometry Science Art Ratio and Proportion
 Probably most of us have heard of and even used hexadecimal color codes. Don't you wonder why their number descriptions really make sense? In this activity we first ask students to color in our ...

Where should I drop my puck

Algebra Number Sense Geometry Ratio and Proportion 3-act tasks Probability and Statistics
  Act 1 - Give students time to view the game board above or give them our one-page activity. The above picture is larger when you click on it. Ask students for their gut reaction about which sl...
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