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Checklists - Am I Finished?
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CC BY-NC-ND
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Checklist for students to use to ensure that all aspects of a constructed response math problem are answered and checked over before completion. 

Subject:
Algebra
Calculus
Computer Science
Geometry
History
Language, Grammar and Vocabulary
Languages
Mathematics
Measurement and Data
Physical Science
Physics
Trigonometry
Material Type:
Lesson Plan
Author:
Emily Horan
Date Added:
07/03/2019
Chemistry Online Resource Essentials: Chapter 9 Bonding & Geometry
Conditional Remix & Share Permitted
CC BY-NC-SA
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This collection of videos, animations and documents comes from the NCSSM AP chemistry online course. Chapter nine provides practice and demonstrations related to chemical bonding and geometry.

Subject:
Chemistry
Geometry
Mathematics
Physical Science
Material Type:
Activity/Lab
Simulation
Provider:
North Carolina School of Science and Mathematics
Provider Set:
Chemistry Online Resource Essentials
Date Added:
01/01/2002
Christo's Building
Unrestricted Use
CC BY
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This task is primarily about volume and surface area, although it also gives students an early look at converting between measurements in scale models and the real objects they correspond to.

Subject:
Geometry
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
05/01/2012
Circle definition and properties
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An interactive applet and associated web page defining a circle. The applet shows a circle where the user can drag the center and a point on the circle. The radius line supports the definition that all points on the circle are a fixed distance from the center. The web page has the definitions of all the circle-related objects, such as diameter, chord etc, with links for each. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Mathematics
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Circumcenter of a Triangle
Unrestricted Use
CC BY
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This task shows that the three perpendicular bisectors of the sides of a triangle all meet in a point, using the characterization of the perpendicular bisector of a line segment as the set of points equidistant from the two ends of the segment. The point so constructed is called the circumcenter of the triangle.

Subject:
Geometry
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
03/04/2013
Circumcircle of a Regular Polygon
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An interactive applet and associated web page that show the properties of a circumcircle of a polygon. The applet shows a regular polygon where the user can drag the vertices to reshape it and alter the number of sides. As the polygon is being varied, the circumcircle is shown, passing through all vertices. The text describes two ways to calculate the radius of the circumcircle, depending on what you are given to start. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Mathematics
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Circumference of a circle
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An interactive applet and associated web page that demonstrate the circumference of a circle. The applet shows a circle with a radius line. The radius endpoints are draggable and the circle is resized accordingly. The formula relating radius to circumference is updated continually as you drag. Introduces the idea of Pi. The formula can be hidden for class discussion and estimation. See also the entries for circumference and diameter. See also entries for radius and diameter. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Mathematics
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Classifying Special Parallelograms Flowchart
Conditional Remix & Share Permitted
CC BY-NC
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I would recommned using this task after feeling confident in your students' understanding of the properties of a parallelogram. While it could serve as a review, I think it is best suited as in introductory piece to get students to see how the properties have a trickle down effect to other quadrilaterals.

Subject:
Educational Technology
Mathematics
Material Type:
Lesson Plan
Author:
Mitch Curtis
Date Added:
10/30/2018
Classifying Special Parallelograms Flowchart
Conditional Remix & Share Permitted
CC BY-NC-SA
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After introducing the properties of parallelograms to students, this activity is a good introductory piece (with a little creativity). Encourage students to engage with the story and add their own details, as well as highlight the relationships between the special parallelograms. Remixed from: Classifying Special Parallelograms by Mitch Curtis

Subject:
Educational Technology
Mathematics
Material Type:
Activity/Lab
Diagram/Illustration
Lesson
Teaching/Learning Strategy
Author:
Reynae Pierce
Date Added:
11/06/2021
Close Enough?
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Educational Use
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Accuracy of measurement in navigation depends very much on the situation. If a sailor's target is an island 200 km wide, sailing off center by 10 or 20 km is not a major problem. But, if the island were only 1 km wide, it would be missed if off just the smallest bit. Many of the measurements made while navigating involve angles, and a small error in the angle can translate to a much larger error in position when traveling long distances.

Subject:
Education
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Janet Yowell
Jeff White
Malinda Schaefer Zarske
Matt Lippis
Penny Axelrad
Date Added:
10/14/2015