Geometry

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Spiraling squares - compass and straight edge

Algebra Number Sense Geometry Holidays and Annual Events Math and Art
Can you see the many spirals in this design? Students calculate the size of each increasing round of squares and consider what sort of spirals these must be. Working wit...

How long would it take to build this underground house and pool?

Algebra Number Sense Geometry Math and Social Studies 3-act tasks
The building of this underground house and pool was presented by Cayote Person and his partner, Mark Lavins, on their youtube channel, "Brave Wilderness." At BraveWilderness.com the busin...

Huge Key Lime pie

Number Sense Geometry Math and Food Ratio and Proportion
More for π Day!   On a cold and snowy day in Boston, two chefs created a huge Key Lime pie to remind the frozen people of the Northeast how tasty and warm the Keys of Florida are. ...

Pythagorean Triples and coloring

Algebra Number Sense Geometry Math and Art
Pythagorean triples are not only handy for students to recognize but produce some interesting and lovely patterns.  We've combined a little coloring with our Pythagorean Triple patter...

Huge diamond found in Canada

Number Sense Geometry Math and Science Ratio and Proportion Data and probability
552-carat diamond found in Diavik Mine, Northwest Territories, Canada Can you tell just how big this gem is?  Do you know how big a carat is? What would this look like on a ring on you...

Macy's Thanksgiving Parade 2019

Algebra Number Sense Geometry Holidays and Annual Events
 As we get ready for next week's holiday, students can study a map of the annual Macy's Thanksgiving Day parade, describe, measure and hypothesize why this route was chosen and then calculate...

More eruptions on Hawai'i's Kilauea

Algebra Geometry Math and Science Current events Ratio and Proportion
The Volcano Kilauea is continuing to spew molten lava and ash on the island of Hawai'i. This volcano is on the tip of the southern most Hawaiian Island. Is that significant? In this activit...

Boeing 787 draws an airplane over the United States

Number Sense Geometry Ratio and Proportion
Recently, pilots of a Boeing 787 testing a new set of Rolls Royce engines, fulfilled their FAA required long-distance endurance requirement in an unusual way. The Boeing pilots decided to have ...

Big Air snowboarding

Number Sense Geometry Math and Science Sports Holidays and Annual Events
Starting February 18th a new Olympic sport will be televised ... Big Air Snowboarding.  Some of your students may be officianados of snowboarding. Using this activity could be an opportunity to l...

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...
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