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Number Sense

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We found 43 post available for you

String design, ellipses, and orbital mechanics
Number Sense Geometry Math and Science Math and Art
Here's a different and somewhat artistic way to encourage understanding of a conic section.  Participants physically build an ellipse by choosing two foci and sketching the fi...

Tiny vacuum with a huge reach
Algebra Number Sense Geometry 3-act tasks
From the vacuum description and advertisement in the PDF, how long do you think its cord must be? Thanks to Brian Shoemaker, Newton, MA teacher, for the idea and pictures.

How steep is this treadmill?
Algebra Number Sense Geometry Ratio and Proportion
  Photo from the Onion, America's Finest New Source. Women on Gym Treadmill Cranks Incline up to 90 Degrees  This is a very short activity designed to give students a more visual underst...

Largest coffee, new world record
Algebra Number Sense Geometry Math and Food
The world record for the largest cup of coffee was recently set (see picture above).  In this activity students explore scale, similar figures, volume and measurement as they estimate the...

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 pattern invest...

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...
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