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  • NC.Math.4.G.1 - Draw and identify points, lines, line segments, rays, angles, and perp...
4.G The Geometry of Letters
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This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Letters can be thought of as geometric figures. How many line segments are needed to make the letter A? How many angles are there? Are they acute, obtu...

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
05/18/2013
4.G What's the Point?
Unrestricted Use
CC BY
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This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: The students in Ms. Sun's class were drawing geometric figures. First she asked them to draw some points, and then she asked them to draw all the line ...

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
05/22/2013
4th Grade Math Teacher Guide
Conditional Remix & Share Permitted
CC BY-NC-SA
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This resource accompanies our Rethink 4th Grade Math course. It includes ideas for use, ways to support exceptional children, ways to extend learning, digital resources and tools, tips for supporting English Language Learners and students with visual and hearing impairments. There are also ideas for offline learning. 

Subject:
Mathematics
Material Type:
Curriculum
Lesson Plan
Teaching/Learning Strategy
Author:
Kelly Rawlston
Letoria Lewis
Date Added:
02/13/2023
4th Grade:  Spaghetti Tower Challenge
Unrestricted Use
CC BY
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 Students will construct a tower as high as possible using spaghetti, lasagna noodles and marshmallows. Limited supplies of materials are available. Pieces of spaghetti can be broken into desired lengths.

Subject:
Mathematics
Material Type:
Activity/Lab
Author:
William Allred
Carrie Robledo
Date Added:
04/30/2020
Acute Angle
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An interactive applet and associated web page that demonstrate acute angles (those less than 90 deg). The applet presents an angle (initially acute) that the user can adjust by dragging the end points of the line segments forming the angle. As it changes it shows the angle measure and a message that indicate which type of angle it is. There a software 'detents' that make it easy capture exact angles such as 90 degrees and 180 degrees The message and angle measures can be turned off to facilitate classroom discussion. The text on the page has links to other pages defining each angle type in depth. 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:
05/07/2019
Angle Barrier Game
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Students work with a partner and sit opposite one another with a divider between them. Each student takes turns drawing and labeling angles in each space on their grids and give instructions to their partner on how to draw the angles to match the ones on his/her grid. Students use positional language to describe where to place the angles.

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
K-5 Math Teaching Resources
Author:
K-5 Math Teaching Resources
Date Added:
02/26/2019
Constructing a 30 degree angle with compass and straightedge
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An interactive applet and associated web page that show how to construct a 30 degrees angle with a compass and straightedge. The animation can be single-stepped or run as a continuous movie. 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:
05/07/2019
Constructing a 45 degree angle with compass and straightedge
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An interactive applet and associated web page that show how to construct a 45 degrees angle with a compass and straightedge. The animation can be single-stepped or run as a continuous movie. 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:
05/07/2019
Constructing a 60 degree angle with compass and straightedge
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An interactive applet and associated web page that show how to construct a 60 degrees angle with a compass and straightedge. The animation can be single-stepped or run as a continuous movie. 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:
05/07/2019
Determining Unknown Angles within Rectangles and Squares
Conditional Remix & Share Permitted
CC BY-NC-SA
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This short video and interactive assessment activity is designed to teach fifth graders about determining unknown angles within rectangles and squares.

Subject:
Mathematics
Material Type:
Assessment
Interactive
Lecture
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Date Added:
06/06/2019
Earthquake in the Classroom
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Educational Use
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Students learn how engineers construct buildings to withstand damage from earthquakes by building their own structures with toothpicks and marshmallows. Students test how earthquake-proof their buildings are by testing them on an earthquake simulated in a pan of Jell-O(TM).

Subject:
Applied Science
Engineering
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Janet Yowell
Jessica Todd
Malinda Schaefer Zarske
Melissa Straten
Date Added:
10/14/2015
Elementary Math  - Grade 3
Conditional Remix & Share Permitted
CC BY-NC-SA
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CK-12's Elementary Math Grade 3 is a series of videos and interactive videos designed to teach basic math concepts to 3rd graders. Concepts covered include Addition and Subtraction, Multiplication, Division, Place Value, Decimals, Time, Factors and Multiples, Money, Measurement, and Geometry.

Subject:
Mathematics
Material Type:
Activity/Lab
Interactive
Lecture
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Date Added:
06/06/2019
Fold and Cut
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Students explore line symmetry and the names and attributes of two-dimensional mathematical shapes.

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
New Zealand Government
Author:
New Zealand Government
Date Added:
02/26/2019