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Number Sense

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We found 48 post available for you

How much should the 40-oz size cost?
Algebra Number Sense Math and Food Data and probability
We found this chalkboard menu at a coffee shop recently. The shop had prices for the 12-oz (small), 16-oz (medium) and 20-ounce (large) cappuccinos.  And they will also make you 40-...

When will he use up his chocolate milk account?
Algebra Number Sense Math and Food Ratio and Proportion
  Brian's son buys chocolate milk every few days to go with his lunch. His school creates an invoice that they send to parents every month that show the status of his milk account. Brian p...

What me? Irrational?
Number Sense
We've found that some students believe that the approximation that their calculators show for irrational numbers is exact.  Here's an activity that you can advertise as long multiplication ...

Want to earn $150,000? - Mersenne prime search
Algebra Number Sense
What's a Mersenne prime?  How hard could it be to find the next one? Why are there only 50 known Mersenne primes?     What's with $150,000?

Super Bowl ads and scientific notation
Algebra Number Sense Holidays and Annual Events
The Super Bowl is over now and all of the ads have been seen. Let your students revisit and reflect on the interesting commercials with this scientific notation activity...

Spiraling triples
Number Sense Geometry Math and Art
Let students explore the patterns of perfect squares and Pythagorean Triples as they analyze our piece of art and decide why the resulting construction looks like spiraling squares. For a finale the...

Measuring sea level
Algebra Number Sense Geometry Math and Science Ratio and Proportion Data and probability
What does this gizmo do? We've given students a diagram of what the interior of this mechanism contains and asked them to try to decide what its purpose must be. Then we've...

10 Million nematodes
Algebra Number Sense Math and Science
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 kill destructive so...

How much do the movie tickets cost?
Algebra Number Sense
Ooops! I was supposed to buy 4 adult and 2 children tickets, but I accidentally entered four children and two adults ... :)  Can you figure out how much a child's ticket and an adult ticket...

How Much is a Tweet Worth?
Algebra Number Sense Math and Social Studies Sports Ratio and Proportion Data and probability
These days it seems everyone is on social media. Are you? Famous athletes and entertainers are on social media and they can make a lot of money.  In this activity students study how ...
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