# Math

Math (X) - Professional (X)

## Urban Planner

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A professor and graduate student talk about the use of math and technology in city planning.

## Introduction to Writing Prompts

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Observe a middle school teacher using writing prompts in a mathematics lesson and consider the value of incorporating writing in the mathematics classroom.

## I <3 Math: Integers - How do Positive and Negative Numbers Relate to Temperature? (Video-Only Clip)

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Providing the opportunity to apply knowledge about positive and negative integers by narrating the clip. Students can describe how integers are represented on a number line as they relate to temperature. An I <3 Math clip with no audio.

## Real-Life Math | Zoo Keeper, Hoofstock

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In this video, zookeeper Michelle Hatwood of the Phoenix Zoo explains how she uses math in her work with hoofstock animals, which include antelope, deer, zebra, giraffe, and rhinoceros. In the accompanying classroom activity, students solve problems that involve calculating with and converting among metric and customary measurement units. To get the most from this lesson, students should be familiar with measurement units in the customary and metric systems and be able to use a calculator to multiply and divide decimal numbers.

## Building Deeper Understanding of Decimal Numbers

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Steve Hinds demonstrates how a brief discussion of money and decimals can help students to shed common misconceptions about decimal place value. (Click here for the background essay.)

## Pi Day

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See how much fun the students at Highlands School had with the concept of "pi" on Pi Day.

## The Power of the Whole Picture

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In this video segment from Cyberchase, the CyberSquad explains to Ms. Fileshare how Hacker deceived her by using a different number scale on his bar graph. They explain to her that comparing two graphs with different scales is not an accurate comparison.  This segment is the third of three segments. Check out “Inventing Bar Graphs” to see how the CyberSquad created their bar graph. Then watch “Attention to Scaling” to see how they discover the difference between Hacker's bar graph and the one they created.

## Decreasing Water Levels

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In this video segment from Cyberchase, the CyberSquad has returned to Sensible Flats, a town whose inhabitants are moving out in droves because the reservoir has run dry. In order to restore water to the town, the CyberSquad collects data and creates a line graph to figure out what happened to the water.

## Directions to Hen Rock

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In this video segment from Cyberchase, the CyberSquad follows a treasure map with riddles to find Ivanka the Invincible’s secret treasure chest. One of the riddles asks the CyberSquad to record how much of a turn they make from one object to another. To do this, they have to record the angle of the turn.

## Inventing Bar Graphs | Cyberchase

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In this video segment from Cyberchase, the CyberSquad discovers a bug problem in the Cybrary. They know that something needs to be done to stop the bugs before they eat everything in the Cybrary, so the CyberSquad creates a bar graph to display the number of bugs they found in each room. Ms. Fileshare is concerned about the bug problem until she is shown a different bar graph that shows the number of bugs in each room to be much smaller. The CyberSquad must figure out why the two graphs look different and which one shows the correct number of bugs in each room.

## Estimating Distance and Time | Cyberchase

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In this video segment from Cyberchase, the CyberSquad is trying to get to Crab Kingdom. First, they must estimate how far the trip is in order to determine how much power they need in their underwater bikes to complete the mission. Since each vehicle has a certain amount of power, the CyberSquad must then decide which vehicle to choose based on how much energy they estimate they will need.

## Measuring for an Exact Fit

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In this Cyberchase video segment, Matt and Jackie must figure out how to construct rectangular lids that match the size of two boxes precisely. They enlist the carpentry skills of one of the Three Little Pigs, who shows them how to use different tools to accurately measure the rectangular lids. For the first box, Jackie finds that she can easily trace the box to make a lid that fits perfectly. The second box cannot be traced, so Matt and Jackie decide to measure the sides of the box and then use the measurements to cut a rectangle of equal size out of a piece of Herculanium.

## Performance by Music of the Spheres

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In this video segment from Cyberchase, Music of the Spheres plays a song using the correct beats and patterns, which helps to restore balance and harmony at Mount Olympus. This video segment is a follow-up to resource "Finding the Common Beat."

## Cyberchase | Patterns in Nature

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In this video segment from Cyberchase, Bianca wants to learn why her plants keep dying, so she transports them in a carriage to the New York Botanical Garden. A helpful plant expert shows her some patterns in plants, including bilateral and rotational symmetry, before discovering the pattern that may be killing Bianca's plants.

## Comparing Regular and Irregular Areas | Cyberchase

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In this video segment from Cyberchase, the CyberSquad must compare two parcels of land during a land rush. One parcel is an irregular shape and belongs to Hacker. The other parcel is a regular rectangle and belongs to Judge Trudy. By dividing each parcel into squares and triangles, they prove that the two shapes have the same area.