Algebra

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Earth's perihelion with the Sun

Algebra Math and Science Holidays and Annual Events Ratio and Proportion Data and probability
Today, Wednesday, January 4th, 2023, Earth will be as close as it gets to the Sun during its orbit. Shouldn't that make this the warmest time of the year? In this activity students become fam...

Is 2023 a special number?

Algebra Number Sense Current events
1998 was a Harshad year. What do you notice about the number 2023? What is a Harshad number? Does 2023 meet the criteria? Big deal?  Rare?  Often?  

How many feet of lights should I buy for my tree?

Algebra Number Sense Geometry Holidays and Annual Events 3-act tasks
Check out our Christmas Tree! We need to buy lights for the tree.  Without calculating, guess how many feet of lights we will need. What information would help you t...

Do I have enough wrapping paper?

Algebra Number Sense Geometry Holidays and Annual Events 3-act tasks
In this problem based activity students first guess and then try to calculate whether they will have enough paper to wrap this present without taping pieces of wrapping paper together. Con...

Wind chill

Algebra Number Sense Math and 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 ...

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 inve...

Inflation and the cost of gasoline

Algebra Number Sense Math and Science Math and 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 for...

Do teams that spend a lot win a lot?

Algebra Number Sense Sports Data and probability
In this activity students compare team wins with team salaries in the four major North American sports ... the NBA, NFL, MLB and NHL.   Students use data from recent seasons to create scatter ...

Hurricanes, Typhoons, and Cyclones

Algebra Number Sense Math and Science Data and probability
  Graphic from http://lagoon-inside.com[ This week Hurricane Fiona caused major damage to Puerto Rico, the Dominican Republic and the Caribbean, This is the season for increased cyc...
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