Geometry and Subtraction
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Geometry Song + lyrics

Mr. R.'s song and video about geometry (with lyrics)- circles, squares, triangles, rectangles, polygons, spheres, and more! See which shapes your students ca...
Erin Scoville's insight:

Song to help students identify different geometric shapes by comparing them to everyday objects. Great to show in class as an introduction. 

 

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Queen of the First Grade Jungle: TONS of Subtraction Ideas!

Queen of the First Grade Jungle: TONS of Subtraction Ideas! | Geometry and Subtraction | Scoop.it
Erin Scoville's insight:

My students would LOVE the "when you subtract with a pirate song. It could be played everyday in the class for students to get an understanding of what subtraction is (taking away) as well as some expamples of solved problems. 

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Ballpark Geometry | Visual.ly

Ballpark Geometry | Visual.ly | Geometry and Subtraction | Scoop.it
Expanded from a more modest infographic produced for the Los Angeles Times in early 2013, this poster highlights the variety of geometry of the 30 cu (How does your favorite ballpark measure up against the competition?

Via Thomas Faltin
Erin Scoville's insight:

VIsualize geometry. This geometry task will really grab the attention of those students who are interested in sports!

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The First Grade Parade: Life Sized Subtraction

The First Grade Parade: Life Sized Subtraction | Geometry and Subtraction | Scoop.it

Via Rebecca Siegel
Erin Scoville's insight:

This exciting activity for students is human subtraction on ten frames.  My kids always like physical activities that get them moving, so I can't wait to use something like this to work on addition or subtraction! A somewhat brain break for kids to move around while subtracting. 

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Rebecca Siegel's curator insight, November 5, 2013 1:56 PM

This exciting activity for students is human subtraction on ten frames.  My kids always like physical activities that get them moving, so I can't wait to use something like this to work on addition or subtraction!

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Geometry Pad

Get Geometry Pad on the App Store. See screenshots and ratings, and read customer reviews.
Erin Scoville's insight:

This app could be downloaded onto the class set of ipads and students can use the APP to make shapes and learn about thier properties. 

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Elementary Geometry. (How to make it fun!)

Elementary Geometry. (How to make it fun!) | Geometry and Subtraction | Scoop.it
Marygrove MAT suggests ways to make elementary geometry interesting and fun for students.
Erin Scoville's insight:

ideas on how to make geomerty fun for kids in a classroom. geometry doesn't have to be a bore. These are ways to make it connect with real life when teaching. 

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For Pasadena school, arts plus math is really adding up

For Pasadena school, arts plus math is really adding up | Geometry and Subtraction | Scoop.it
A Pasadena elementary school uses art to teach third graders addition, subtraction and long division. An advocacy group wants to expand the program across the state.

Via Hilary Frambes
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Using art and real life design to teach children subtraction and other math skills. Using handson learning toold to reform the way students think about math. 

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Hilary Frambes's curator insight, May 11, 2013 2:09 PM

"Even my more challenged students -- and I have about five of them -- the engagement is like 180 degrees. It’s like a different child," said third-grade teacher Beverly Grotts.

The program, called "Artful Connections with Math," was developed by the Pasadena Unified School District and the Armory Center for the Arts. Funded by a $1 million grant from the U.S. Department of Education, it pairs classroom teachers like Grotts with "teaching artists"  who show them how to use hands-on, visual art projects to teach math concepts."

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Teaching Addition and Subtraction, Part Two

Teaching Addition and Subtraction, Part Two | Geometry and Subtraction | Scoop.it
I remember my first experience in a Mathematics Methods Course of a Part/Part Whole Mat. I really liked how the mat could be used for both addition and subtraction. This was the beginning of my ped...
Erin Scoville's insight:

Teaching subtraction and reasoning behind decomposing in the classroom with ideas such as unifex cubes, beads, five-frames and ten-frames. 

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Mathsframe: 170+ quality interactive maths games for KS2 - Addition and Subtraction

Mathsframe: 170+ quality interactive maths games for KS2 - Addition and Subtraction | Geometry and Subtraction | Scoop.it
Erin Scoville's insight:

Subtraction games that could be played on the computer for practice and number fluency during Daily 5 time or while in the computer lab. 

#subtraction 

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How honeycombs can build themselves

How honeycombs can build themselves | Geometry and Subtraction | Scoop.it
Physical forces rather than bees’ ingenuity might create the hexagonal cells. (RT @m_m_campbell: Putting a hex on things. Physics shapes up honeycomb cell geometry.
Erin Scoville's insight:

Use in the classroom. What do you see? What do you notice? 

 

Talk about shape and change. 

 

Bees simply make cells that are circular in cross section and are packed together like a layer of bubbles. According to their research,  the wax, softened by the heat of the bees’ bodies, then gets pulled into hexagonal cells by surface tension at the junctions where three walls meet.

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