Common Core standard

Activities for 7.RP.A

Real-world activities aligned to this standard.

Proposed southern border wall
Proposed southern border wall

You have probably heard about the proposed border wall that may go up along the U.S./Mexico border. How much wall needs to be built? How much will that...

Number Sense Math and Social Studies Grades 5–7
Civil rights marches, how do you count a crowd?
Civil rights marches, how do you count a crowd?

On October 16, 1995, perhaps a million black men gathered for the Million Man March on Washington. This was 32 years after Martin Luther King, Jr. gave his...

Number Sense Geometry Grades 4–HS
It's latke time
It's latke time

In Leslie's family it is traditional to eat latkes (Yiddish for little potato pancakes) at this time of year. They are fried in a lot of oil and...

Number Sense Math and Food Grades 6–7
Cubs bury curse !
Cubs bury curse !

Wow! It's been a long time coming. The Chicago Cubs just won the World Series! The last time they won the World Series was in 1908 (For some...

Number Sense Sports Grades 4–8
Are these really 70% off?
Are these really 70% off?

We ran into this sale online. Is that advertisement correct? Do they just want us to believe their math and not question what is really 70% off? Is...

Algebra Number Sense Grade 7
Pokémon GO!  I should have invested
Pokémon GO! I should have invested

Pikachu Pokémon GO is all the rage. News reports show people glued to their smart phones as they travel to nearby landmarks where virtual critters appear and need...

Algebra Number Sense Grades 5–HS
10 Million nematodes
10 Million nematodes

Nematodes Grubs are killing my grass. I don't want to put poison into the ground. What can I do? There are tiny roundworms called beneficial nematodes. They can...

Algebra Number Sense Grades 5–HS
Leicester City Foxes - from underdogs to Champions
Leicester City Foxes - from underdogs to Champions

Recently, to the surprise and elation of England and the world, the Leicester City Foxes became the winners of the British football association's Premier League. What was the...

Algebra Number Sense Grades 6–HS
Flag Art
Flag Art

A little ratio art might be a fun way to get ready for the upcoming Memorial Day holiday. In this activity (Flags) students measure; create whole number ratios...

Number Sense Geometry Grades 4–8
David Price, big bucks per ...
David Price, big bucks per ...

David Price, a 30-year old pitcher from Toronto's Blue Jays, was hired with a 7 year contract to be the Red Sox's new ace pitcher for $217 million...

Number Sense Sports Grades 6–HS
Giant chocolate bunnies
Giant chocolate bunnies

What can you deduce about these bunnies from their descriptions ... solid? hollow? cost per pound? cost per height? Anything else? For Adventurer members we have an editable...

Number Sense Geometry Grades 6–7
What's with the plovers?
What's with the plovers?

Cute little birds. Piping plovers are nesting on beaches along the Atlantic coast. Consequently beaches are often roped-off or closed to protect their nests and chicks. Is this...

Algebra Number Sense Grades 7–HS