Geometry

Grade

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Let's learn to gerrymander

Geometry Math and Social Studies Current events Ratio and Proportion
In this activity student first try to redistrict our pretend state in order to preserve the overall state's balance in its new districting plan.  Then, students redistrict our pretend state in a ...

Betsy Ross's 5-pointed star

Algebra Geometry Math and Social Studies Math and Art
Flag of the United States from 1777 to 1795.    In honor of Independence Day we thought it would be fun to look at one story about the first American Flag. The rough desig...

Penny Wars anew

Geometry 3-act tasks
Act One: Check out all of the pennies! What questions come to mind? If you want the most money, which container should you pick? What information do you need to answer this...

Do caffeinated drinks have similar amounts of jolt?

Geometry Math and Science Math and Food Ratio and Proportion
We found this interesting caffeine infographic at visual.ly. Wonderings? How many McDonalds coffees do I need to get the same amount of caffeine that I would get i...

Tree for Springtime

Algebra Geometry Math and Art
Here in the Northeast, flowers are blooming and trees are leafing out. We thought the creation of a tree that grows before your eyes might be akin to what is going on all around us. What d...

Inauguration Date

Algebra Number Sense Geometry Data and probability
  The date of the Presidential Inauguration this year can be written in an interesting way. What do you notice?  What do you wonder?  Do you think that this happens often in a yea...

December 21, 2020 - Great conjunction

Algebra Number Sense Geometry Math and Science Current events
Right now, just after sunset, in the southwest sky, you can check out the planets of Jupiter and Saturn as they get closer and closer to each other. They are millions of miles apart but they app...

Canstruction

Algebra Number Sense Geometry Math and Social Studies 3-act tasks
  Act One:  Take a look at the pic. What questions come to mind? Just before Thanksgiving there are competitions all over the world to celebrate cool design, tricky engineering, a...

Can you show that the Pythagorean Theorem works?

Algebra Number Sense Geometry
Use this activity to help your students work through the meaning of the Pythagorean theorem. Pythagorean theorem experiences are often skill and drill work with contrived right triangle problem...

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...
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