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Leslie's socially-distanced party

Algebra Geometry Math and Science
I risked infecting my friends or becoming infected myself by throwing a very small socially-distanced party.  I served baked appetizers, disinfectant wipes, and latex gloves.  I cooked whi...

Fish tale, go figure!

Algebra Geometry 3-act tasks
This is being updated. Stay tuned! With the subscription, you can still access the previous version of this activity by clicking solutions & supporting materials. ...

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 long will it take you to trick-or-treat?

Number Sense Geometry Holidays and Annual Events
It's Halloween and this is your neighborhood. How long will it take you to trick or treat at every house in your neighborhood? Possible conversation with students: How long will it tak...

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...

Point of view

Geometry Math and Art
If you have a set of cubes for your classroom, this would make a great group hands-on project. Its an old puzzle but the activity deserves a revisit. Below are two straight-on images of my ...

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...
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