Number Sense


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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 ...
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