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  • Plane Geometry
Line bisector
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An interactive applet and associated web page that demonstrate a bisector of ...

An interactive applet and associated web page that demonstrate a bisector of a line segment. The applet shows a fixed line segment and another line that bisects it. The second line's endpoints can be dragged, but the line adjusts itself so that it always bisects the fixed line. 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
Material Type:
Readings
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page
Line definition (Coordinate Geometry)
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An interactive applet and associated web page that show the definition of ...

An interactive applet and associated web page that show the definition of a line in coordinate geometry. The applet has two points that the user can drag. The two points define a line, and the user can see how the line changes when the points are moved. The grid, axis pointers and coordinates can be turned on and off. The applet can be printed as it appears on the screen to make handouts. The web page has a full definition of a line when the coordinates of the points defining it are known, 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.

Subject:
Geometry
Material Type:
Readings
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page
Linking Length, Perimeter, Area, and Volume
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This sequence of four lessons is designed to help students to understand ...

This sequence of four lessons is designed to help students to understand ratio, proportion, scale factor, and similarity. Using online activities, they compare the perimeter and area ratios of similar rectangles with various scale factors; work with scale factor and surface area of various rectangular prisms; explore the relationship between the volume of two similar rectangular prisms; and examine the connection between the surface area of two similar rectangular prisms. All instructions, needed links, and activity sheets are provided.

Subject:
Geometry
Numbers and Operations
Material Type:
Activities and Labs
Lesson Plans
Teaching and Learning Strategies
Provider:
National Council of Teachers of Mathematics
Provider Set:
Illuminations
Locus
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A web page and interactive applet that illustrate the concept of locus. ...

A web page and interactive applet that illustrate the concept of locus. The applet shows a model of the plane populated with a large number of points on a grid. Those points equidistant form a point are highlighted, forming a circle in this case. The user can drag the point and drag the distance, showing the circle moving and changing size. The text page has a description of the locus concept and links to other loci - a straight line and an ellipse. 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
Material Type:
Readings
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page
Look Into Infinity
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Learners use two mirrors to explore how images of images of images ...

Learners use two mirrors to explore how images of images of images can repeat forever. This resource includes a light-ray diagram to help learners understand what they are seeing -- images appear to be grouped in pairs with a front side always facing a front side and a back side always facing a back side. Learners can assist in assembling the Infinity Mirror or use one that has been pre-assembled.

Subject:
Physics
Material Type:
Activities and Labs
Provider:
Exploratorium
Provider Set:
Science Snacks
Author:
California Department of Education
National Science Foundation
NEC Foundation of America
The Exploratorium
Looking Through the Algebraic Lens
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In this two-part math lesson, learners investigate problems that foster algebraic thinking ...

In this two-part math lesson, learners investigate problems that foster algebraic thinking across content strands. In the first part, learners explore even and odd numbers linked to quilts. Learners work with rectangles to find generalizations for adding and subtracting odd and even numbers. In the second part, learners use geoboards to construct polygons, look for patterns, and find a general rule.

Subject:
Education
Mathematics
Algebra
Geometry
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:
PBS
US Department of Education
Lost in the Northern Frontier
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In this online math game from Cyberchase, Digit is lost in the ...

In this online math game from Cyberchase, Digit is lost in the Northern Frontier! Learners use the power of circles to find the intersection point to locate Digit. Learners draw overlapping circles to help the CyberSquad find everyone's favorite cyboid.

Subject:
Education
Mathematics
Geometry
Physics
Material Type:
Activities and Labs
Games
Instructional Material
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
Corporation for Public Broadcasting
Ernst & Young LLP
National Science Foundation
Northrop Grumman Corporation
PBS
The Volckhausen Family
WNET
The Magic Box
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In this math lesson, learners participate in a variety of activities that ...

In this math lesson, learners participate in a variety of activities that give them experience in recognizing, describing, and extending repeating and arithmetic patterns. Learners begin by describing patterns they find in the room. Next, learners describe the arithmetic or numerical pattern they observe in a skipped rope. Learners also explore patterns as they sing, clap and identify patterns in the educator's "magic box." They are given shapes and challenged to extend the pattern started by the educator. Learners then work at centers to further investigate patterns. Center activities include photographing patterns found outside, stringing beads in patterns, making creations with Tinker Toys and Lincoln Logs, exploring patterns on the computer, reading the "Patchwork Quilt" and creating quilt patterns, and making new patterns for the "Magic Box." (Note: the computer center should be skipped because it does not seem possible to buy the Patternmakers software. The loss of this center will not significantly impact the activity.)

Subject:
Education
Mathematics
Geometry
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:
PBS
US Department of Education
Magnetic Marble Run
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Learners explore magnetism and motion as they build a simple marble run. ...

Learners explore magnetism and motion as they build a simple marble run. Learners test different arrangements of plastic and cardboard tubes, bottles, and cups on a magnetic board. Learners use their marble tracks to investigate gravity, friction, motion, and momentum.

Subject:
Engineering
Education
Mathematics
Chemistry
Physics
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:
Community Science Workshop Network
Oakland Discovery Centers
Major / minor axis of an ellipse
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An interactive applet and associated web page that show the major and ...

An interactive applet and associated web page that show the major and minor axes of an ellipse. The applet has an ellipse whose major and minor axis endpoints can be dragged. As they are dragged the major and minor axes change length and may swap places. The applet also shows the location of the foci, which are always on the major axis, and shows how they move with variation of the axis lengths. 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
Material Type:
Readings
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page
Make Ziff's Carpenter's Square
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In this Cyberchase activity, learners make carpenter's squares and use them to ...

In this Cyberchase activity, learners make carpenter's squares and use them to measure square corners. Learners cut out the carpenter's square template and attach it to tagboard. Learners can use the tool to complete the "Square One" activity (see related resource) or measure square corners in the room.

Subject:
Engineering
Mathematics
Material Type:
Activities and Labs
Instructional Material
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
Corporation for Public Broadcasting
Ernst & Young LLP
National Science Foundation
Northrop Grumman Corporation
PBS
The Volckhausen Family
WNET
Make a Model Home Made From Shipping Containers
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Watch an interview with a couple who built a home from shipping ...

Watch an interview with a couple who built a home from shipping containers. Then, design and construct a scale model of a unique shipping container home using printed templates, and estimate the cost of flooring and paint based on model dimensions.

Subject:
Architecture and Design
Engineering
Manufacturing
Education
Ecology
Forestry and Agriculture
Mathematics
Algebra
Functions
Geometry
Chemistry
Physics
Material Type:
Activities and Labs
Case Study
Data
Instructional Material
Lecture Notes
Lesson Plans
Video Lectures
Provider:
Science and Math Informal Learning Educators (SMILE)
Science Friday
Science Friday Initiative
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Science Friday
Author:
Ariel Zych
Science Friday
Science Friday Education
Making Tangram Pieces by Folding Paper
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In this math lesson, learners follow step-by-step directions for making tangram pieces ...

In this math lesson, learners follow step-by-step directions for making tangram pieces out of folded and torn paper. First, learners read "Grandfather Tang's Story" by Ann Tompert. Then, learners explore geometric concepts by folding and tearing paper into tangram pieces. Many concepts are covered, including acute and obtuse angles, congruency, parallel lines, right triangles, parallelograms, and trapezoids.

Subject:
Mathematics
Geometry
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:
Utah Education Network
Utah LessonPlans
Making a Translation Tessellation
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In this activity, learners slide shapes to create unusual tiled patterns. Learners ...

In this activity, learners slide shapes to create unusual tiled patterns. Learners transform a rectangle into a more interesting shape and then make a tessellation by repeating that shape over and over again. Learners will also calculate the area of a rectangle. This activity works best as a "centers" activity.

Subject:
Geometry
Material Type:
Activities and Labs
Provider:
Exploratorium
Provider Set:
Science Snacks
Author:
Exploratorium
Gordon and Betty Moore Foundation
National Science Foundation
The Exploratorium
Mapping All of Me
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In this math lesson, learners place yarn strips appropriately on 4' í„ ...

In this math lesson, learners place yarn strips appropriately on 4' í„ 3' strips of paper and draw around the yarn to create a map of their body. Then, learners use directional and positional words to describe their body map. This activity is recommended as a follow up to the "Measuring Me" lesson (see related resources). This lesson guide includes questions for learners, assessment options, extensions, and reflection questions.

Subject:
Life Science
Mathematics
Geometry
Chemistry
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:
Carol Midgett
NCTM Illuminations
Thinkfinity/Verizon Foundation
Marble Ride
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In this activity, challenge learners to design a roller coaster ride for ...

In this activity, challenge learners to design a roller coaster ride for a marble using cardboard and other simple materials. The goal is to have the marble go slow, so it takes as long as possible to go from the top of the board to the bottom. Use this activity to introduce friction.

Subject:
Engineering
Education
Mathematics
Geometry
Chemistry
Physics
Material Type:
Activities and Labs
Instructional Material
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
Corporation for Public Broadcasting
National Science Foundation
PBS
WGBH
WGBH Boston
Marble Run!
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This activity (on page 2 of the PDF) is a full inquiry-based ...

This activity (on page 2 of the PDF) is a full inquiry-based challenge related to motion and design optimization. Groups of learners will use construction paper to build a model bobsled run for a marble to follow down a ramp. They are then challenged to get the marble down the ramp in a time of 12 seconds, continuing to modify and re-test their run until they reach this goal. Learners can track their progress by creating a bar chart that shows the speed of each design version. This is a great activity for developing team-building skills. Relates to linked video, DragonflyTV GPS: Luge.

Subject:
Engineering
Education
Mathematics
Geometry
Chemistry
Physics
Material Type:
Activities and Labs
Data
Instructional Material
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
National Science Foundation
Twin Cities Public Television
Twin Cities Public Television, Inc.
Mass, Area, Volume
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In this activity (page 18 of PDF), learners will measure the volume ...

In this activity (page 18 of PDF), learners will measure the volume of impact craters created by projectiles of different masses. They will also draw connections between the mass of the projectile and the volume of crater it creates. This lesson also includes extension activities: Analyzing the formula for the volume of sphere (p46-50), and calculating the volume of a crater (p32-35). The Moon Math: Craters! guide follows a 5E approach, applying concepts of geometry, modeling, data analysis to the NASA lunar spacecraft mission, LCROSS.

Subject:
Engineering
Education
Mathematics
Geometry
Chemistry
Physics
Material Type:
Activities and Labs
Instructional Material
Lesson Plans
Simulations
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
NASA
Math / scientific calculator
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A free web based math / scientific calculator specially designed for the ...

A free web based math / scientific calculator specially designed for the education environment. It operates in a very similar way to the popular school calculators and so does not need re-learning. The calculator can be blown up to full screen size, making it a useful teaching tool in a classroom setting with a projector. Functions: sin, cos, tan, sin-1, cos-1,tan-1 square root, log10, loge, power of ten, squared, ex Constants: pi, e, root 2 This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Readings
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page
Measuring Your Blind Spot
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In this activity, learners calculate the width (horizontal diameter) of the blind ...

In this activity, learners calculate the width (horizontal diameter) of the blind spot on their retina. Learners make a blind spot tester using a piece of notebook paper. They use simple geometry of similar triangles to calculate the size of the blind spot.

Subject:
Engineering
Education
Life Science
Mathematics
Algebra
Geometry
Physics
Psychology
Material Type:
Activities and Labs
Instructional Material
Provider:
Neuroscience for Kids
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
Eric H. Chudler
Eric H. Chudler, Ph.D.
University of Washington