# Keywords: Perpendicular (21)

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# Ancient Observatories: Timeless Knowledge Activities

This lesson plan provides learners with two activities to explore the connections ... (more)

This lesson plan provides learners with two activities to explore the connections between events in their lives and the seasons of the year. Learners follow lists of instructions and create diagrams to visualize these connections. This lesson plan includes activity instructions and answer keys. (less)

Subject:
Mathematics
Geoscience
Space Science
Education
Material Type:
Activities and Labs
Instructional Material
Lesson Plans
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
NASA

# Constructing a perpendicular at a point on a line

An interactive applet and associated web page that provide step-by-step animated instructions ... (more)

An interactive applet and associated web page that provide step-by-step animated instructions on how to construct a perpendicular to a given line at a given point on the line. The animation can be run either continuously like a video, or single stepped to allow classroom discussion and thought between steps. 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. (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page

# Constructing a perpendicular at the end of a ray with compass and straightedge

An interactive applet and associated web page that provide step-by-step instructions on ... (more)

An interactive applet and associated web page that provide step-by-step instructions on how to construct a perpendicular at the endpoint of a ray using only a compass and straightedge. The animation can be run either continuously like a video, or single stepped to allow classroom discussion and thought between steps. 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. (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page

# Constructing a perpendicular from a line through a point

An interactive applet and associated web page that provide step-by-step animated instructions ... (more)

An interactive applet and associated web page that provide step-by-step animated instructions on how to construct a perpendicular to a given line through a given point off the line. The animation can be run either continuously like a video, or single stepped to allow classroom discussion and thought between steps. 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. (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page
Remix and Share

# Constructing a perpendicular to a point on the line

A GeoGebra simulation of the construction of a perpendicular to a point ... (more)

A GeoGebra simulation of the construction of a perpendicular to a point on the line. (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Provider:
GeoGebra
Provider Set:
GeoGebraTube

# Graphing Equations on the Cartesian Plane: Slope

Students learn about an important characteristic of lines: their slopes. Slope can ... (more)

Students learn about an important characteristic of lines: their slopes. Slope can be determined either in graphical or algebraic form. Slope can also be described as positive, negative, zero or undefined. Students get an explanation of when and how these different types of slope occur. Finally, they learn how slope relates to parallel and perpendicular lines. When two lines are parallel, they have the same slope and when they are perpendicular their slopes are negative reciprocals of one another. (less)

Subject:
Mathematics
Engineering
Material Type:
Instructional Material
Lesson Plans
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Aubrey Mckelvey
TeachEngineering.org
VU Bioengineering RET Program, School of Engineering,
Remix and Share

# A Laboratory Guide for Elementary Geomet

Teaching guide with interactive, problem-centered, inquiry-based geometry learning activities for upper elementary ... (more)

Teaching guide with interactive, problem-centered, inquiry-based geometry learning activities for upper elementary (grades 3-6) students that meet many of the Geometry and Measurement standards. Activities are designed to be used with GeoGebra, but many could be adapted to be used without technology. (less)

Subject:
Mathematics and Statistics
Material Type:
Lesson Plans
Provider:
GeoGebra Institute of Iowa
Provider Set:
GeoGebra Institute of Iowa

# Perpendicular

An interactive applet and associated web page that demonstrate the concept of ... (more)

An interactive applet and associated web page that demonstrate the concept of 'perpendicular'. The applet presents two intersecting line segments, one initially at right angles to the other. As you drag the end points of the line segments a message and the right-angle mark at the intersection tell if it is currently perpendicular. The goal is to show what a right angle 'looks like'. 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. (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page
Remix and Share

# Perpendicular Lines

An interactive file for students to discover the relationship between slopes of ... (more)

An interactive file for students to discover the relationship between slopes of perpendicular lines. (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Provider:
GeoGebra
Provider Set:
GeoGebraTube

# Perpendicular bisector

An interactive applet and associated web page that demonstrate the perpendicular bisector ... (more)

An interactive applet and associated web page that demonstrate the perpendicular bisector of a line segment. The applet shows a fixed line and another moveable one that bisects it. As you drag either end of it, it is seen that only when they are perpendicular to each other is the definition valid. 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. (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page

# Perpendicular lines. (Coordinate Geometry)

An interactive applet and associated web page that show how to determine ... (more)

An interactive applet and associated web page that show how to determine of one line is perpendicular to another in coordinate geometry. The principle used is that if two lines a re perpendicular to each other the slope of one is the negative reciprocal of the other. The applet shows to lines that the user can move. The slopes are continuously calculated as you drag them, and if the they are parallel they change color. The calculation is shown on screen updated continuously as you drag. The grid, axis pointers and coordinates can be turned on and off. The calculation display can be turned off to permit class exercises and then turned back on the verify the answers. The applet can be printed as it appears on the screen to make handouts. The web page has a full description of the concept of perpendicularity, a worked example and has links to other pages relating to coordinate geometry. 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. (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page

# Playground Patterns of Cracks

In this math activity, learners observe and sketch cracking patterns in pavement. ... (more)

In this math activity, learners observe and sketch cracking patterns in pavement. Learners use a protractor to measure and label the angles of their sketches and conclude if some angles are more common than others. (less)

Subject:
Mathematics and Statistics
Mathematics
Chemistry
Life Science
Physics
Social Sciences
Education
Material Type:
Activities and Labs
Instructional Material
Provider:
Exploratorium
Science and Math Informal Learning Educators (SMILE)
Provider Set:
Exploratorium
SMILE Pathway: Science and Math Activities in One Search
Author:
Exploratorium
Gordon and Betty Moore Foundation
National Science Foundation
The Exploratorium

# Polygon Capture

In this math activity, learners classify polygons according to more than one ... (more)

In this math activity, learners classify polygons according to more than one property at a time. In the context of a game, learners move from a simple description of shapes to an analysis of how properties are related. This lesson guide includes sample steps in the game and extensions. (less)

Subject:
Mathematics
Life Science
Education
Material Type:
Activities and Labs
Games
Instructional Material
Lesson Plans
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
NCTM Illuminations
Thinkfinity/Verizon Foundation
William Carroll

# Right Angle

This article gives teachers background information on right angles. It provides geometric ... (more)

This article gives teachers background information on right angles. It provides geometric and practical examples, a paper folding construction method, and some history of the usage of the term 'right.' (less)

Subject:
Mathematics
Engineering
Social Sciences
Education
Material Type:
Reference
Provider:
Maryland Public Television
Provider Set:
Mathlanding: Elementary Mathematics Pathway
Author:
Paul Goldenberg

# Rocket Me into Space

One of the exciting challenges for engineers is the idea of exploration. ... (more)

One of the exciting challenges for engineers is the idea of exploration. This lesson looks more closely at Spaceman Rohan, Spacewoman Tess, their daughter Maya, and their challenges with getting to space, setting up satellites, and exploring uncharted waters via a canoe. This lesson reinforces rockets as a vehicle that helps us explore outside the Earth's atmosphere (i.e., to move without air) by using the principles of Newton's third law of motion. Also, the ideas of thrust, control and weight all principles that engineers deal with when building a rocket are introduced. (less)

Subject:
Mathematics and Statistics
Mathematics
Science and Technology
Engineering
Physics
Space Science
Technology
Material Type:
Activities and Labs
Instructional Material
Lesson Plans
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Brian Argrow
Integrated Teaching and Learning Program,
Janet Yowell
Jay Shah
Jeff White
Luke Simmons
Malinda Schaefer Zarske
TeachEngineering.org

# Transversal

An interactive applet and associated web page that demonstrate the transversal, a ... (more)

An interactive applet and associated web page that demonstrate the transversal, a line that crosses two other (usually parallel) lines. The applet shows two lines that are initially parallel, and a transversal line. All eight angles thus formed are shown. As you drag the transversal end points, you can see that the angles form congruent, supplementary and complementary sets. If you move one of the parallel lines to make it non-parallel, you can see that these angles lose some of their relationship with each other. 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. (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page

# Walk the Line: A Module on Linear Functions

Prepared with pre-algebra or algebra 1 classes in mind, this module leads ... (more)

Subject:
Mathematics
Engineering
Geoscience
Life Science
Material Type:
Instructional Material
Unit of Study
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Aubrey Mckelvey
TeachEngineering.org
VU Bioengineering RET Program,
Remix and Share

# condition of parallel and perpendicular Lines

Summary With the help of this activity, we have learnt that: 1.The ... (more)

Summary With the help of this activity, we have learnt that: 1.The slope of a Lines is 0 when the Lines is horizontal. 2.The slope of the Lines is undefined when the Lines is vertical. 3.When the two Lines are parallel, t (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Provider:
GeoGebra
Provider Set:
GeoGebraTube

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