# Geometry

## Addends of Six with Manipulatives

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Introducing the benefits of manipulatives to explore addition concepts. This 1st grade teacher asks her students to use unifix cubes to create addends of six before recording their findings.

## Mathroom - Equal Pieces | The Odd Squad

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Learn about dividing quantities with the Odd Squad. A visit to the Mathroom helps Olive and Otto understand why things are being cut into equal pieces across town.

## Lights, Camera, Teach!

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See yourself through the eyes of your students. What is the quality of your mathematics instruction? What is the power of video, and how can it be utilized in the classroom?

This media gallery includes a session from KCPT's 2018 K-12 Technology Conference featuring representatives from the Blue Springs School District discussing the Making Math Matter partnership with KCPT, Center School District, Hickman Mills School District and Wellington-Napoleon School District. This grant provided an opportunity for educators to be filmed as a component of their professional learning communities established within the grant. This media gallery also includes the first episode of the Making Math Matter professional devlopment series, "Adding and Subtracting Decimals."

## Pull 'Er Up

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In this video segment from Eureeka!, the CyberSquad pulls up the flat sides of a 2-dimensional net to make a 3-dimensional building.

## Identifying Trapezoids

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In this video, learn about the specific properties of trapezoids.  Trapezoids are special types of quadrilaterals that differ from squares, rectangles, and other parallelograms. In the accompany classroom activity, students investigate what distinguishes this shape from parallelograms by building trapezoid models out of straw and tape.

## Pythagoras Puzzler

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Visualize a proof to the Pythagorean theorem at the National Museum of Mathematics. This video focuses on modeling the concepts behind the Pythagorean theorem with manipulatives. This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers.

## Geometry and Spatial Relations: It's a Perfect Fit (Part 1)

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Using this resource group, teachers can focus on the topic of geometry and spatial relations and, in particular, on identifying, describing, and classifying two-dimensional shapes. Students are challenged to duplicate two-dimensional shapes and sort a collection of shapes according to their attributes. This resource group is part of the Mathline Elementary School Math Project.

## Welcome to the Break Room Part 2 | Odd Squad

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Learn how to divide a pizza into halves, fourths, and eighths when Oksana, the Odd Squad chef, shows off all of the delectable treats she makes with pudding.

## Geometry: Tiling the Plaza

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In this professional development video, teachers focus on the topic of geometry by having students arrange pattern blocks to create tessellations and explore geometric patterns. This video can be used in conjunction with the Tiling the Plaza lesson plan.

## Triangles

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In this video segment from Cyberchase, the CyberSquad must build a path to cross a stream of hot lava. They find a pile of triangle shaped tiles which float in the lava and don’t melt. They work together to try to figure out how to create a path made of the triangle tiles that has no gaps and no overlaps. Check out the video segment "Hexagons" to see if the CyberSquad makes it across the stream of lava.