Secondary Math

Geometry Resources

The links below have been selected by the Omaha Public Schools based on their relevance to curriculum needs. None of these sites are owned or controlled by the Omaha Public Schools. Neither the district nor its employees are responsible for their contents or their links to other locations.

Curriculum page : Math Curriculum

Important notes:

Several of the links on this page require the Mathematica MathReader application. Contact your Building Internet Support person if it is not installed on your computer.
There are also a number of links to HyperStudio stacks. They can be downloaded, but you will need HyperStudio in order to use them.

Title: Eratosthenes Finds Diameter of Earth!
Address: http://math.rice.edu/~ddonovan/Lessons/eratos.html
Description: The students will learn to estimate the diameter and circumference of the Earth by repeating Eratosthenes experiment. They will use the Internet to exchange measured data and results and to research the mathematical and scientific contributions of Eratosthenes.

Title: Tessellation Tutorial
Address: http://forum.swarthmore.edu/sum95/suzanne/tess.intro.html
Description: Tutorials and templates for making your own tessellations other topics included are: What is a tessellation, Where is the Math, Historical and Geographical Connections. The tutorials are written in Claris Works, Hyper Card, HyperStudio and LogoWriter.
OIPs: 03, 12

Title: Problem of the Week and Project of the Month
Address: http://forum.swarthmore.edu/pow2/index.html
Description: The Geometry ForumÕs Problem of the Week and Project of the Month are posted in the geometry. pre-college news group which can be read as news or email. Solutions are sent to: pow@forum. swarthmore.edu
OIPs: 05-14

Title: GeometerÕs Sketchpad Introductory Lab
Address: http://forum.swarthmore.edu/sketchpad/intro/gsp.introlab.html
Description: The purpose of this lab is to become accustomed to using the GeometerÕs Sketchpad (GSP). Answer the questions in the space provided. Something should happen each time a question is asked and you are to describe what happens. If nothing happens, try again. The lab is divided into four parts: Preliminary Setup, The Toolbox, Other Useful Functions, and Menu More Menus
OIPs: 05-14

Title: The Most Colorful Math of All - Map Coloring (MegaMath)
Address: http://www.c3.iani.gov/mega-math/workbk/map/map.html
Description: Coloring is a profound mathematical topic with many multi-million-dollar industrial applications. The problem presented here has been of interest to mathematicians for over a hundred years. Some versions of the problem are easy to solve, others have yielded only recently to relentless efforts that would not have been possible without the aid of powerful computers. In all of its aspects, the basic problem is the same: How m;any colors do you need? With a few crayons or markers and some hand-drawn maps, children can quickly find themselves grappling with some of the same conundrums that contemporary mathematicians do. Four-color map problem. Activities, Background Information, Evaluation.
OIPs: 05

Title: Why SSA Does Not Determine A Triangle
Address: http://www.com/mathSource/Applications/Education/Secondary/0207-526/SSA.ma
Requires MathReader
Description: This notebook provides a graphical animation of the three ambiguous cases of the Law of sines. The first case is the case where a short side, smaller than the altitude of the triangle to be constructed leads to an impossible situation. This is the case where the first side is equal to the altitude of the triangle. This is the last case where the first side is longer than the altitude but shorter than the second side which is adjacent to it.You must down load Ma threader to use any of the Mathematicas notebooks created for the Wave Project
OIPs: 06

Title: Corresponding Angles
Address: http://unite.ukans.edu/UNITEResource/806787717-81ED749B.rsrc
HyperStudio stack
Description: This HyperStudio defines and illustrates corresponding angles. This 827k, self-extracting archive contains the HyperCard stack Corresponding Angles.
OIPs: 10

Title: Angles of a Triangle
Address: http://unite.ukans.edu/UNITEResource/806787656-81ED7D49.rsrc
HyperStudio stack
Description: This HyperStudio stack presents and proves the axiom the sum of three angles of a triangle equal 180 degrees. This 885k, self-extracting archive contains the HyperCard stack Angles of a Triangle = 180.
OIPs: 06

Title: Cooperation Hexagons
Address: http://unite.ukans.edu/UNITEResource/811202592-81ED7D4C.rsrc
HyperStudio stack
Description: Cooperation Hexagons is a cooperative learning activity for small groups to not only problem solve (guess and check) but also to discuss and reflect on skills necessary for a group to complete a task. What are the ingredients of success.
OIPs: 06

Title: Circling Around
Address: http://unite.ukans.edu/UNITEResource/817016172-81ED74C.rsrc
HyperStudio stack
Description: Here is a concrete hands-on way to teach meaning to the formula for the circumference of a circle. (pi * diameter).
OIPs: 07

Title: Surface Area of a Sphere
Address: http://unite.ukans.edu/UNITEResource/817016153-81ED7D4C.rsrc
HyperStudio stack
Description: Here is a concrete way to show students why the surface area of a sphere is derived from the formula 4*pi*(r*r).
OIPs: 07

Title: Geometry Concentration
Address: http://unite.ukans.edu/UNITEResource/8170716208-81ED7D4C.rsrc
HyperStudio stack
Description: This is a game that you can make for your students to reinforce geometry vocabulary. one to five players can play at a time.
OIPs: 05-14

Title: Vertical Angles
Address: http://unite.ukans.edu/UNITEResource/806787725-81ED7D49.rsrc
HyperStudio stack
Description: This HyperStudio stack defines and illustrates vertical angles. This self-extracting archive contains a 1262k HyperStudio stack called Vertical Angles.
OIPs: 10

Title: Triangles
Address: http://unite.ukans.edu/UNITEResource/806787722-81ED7D49.rsrc
HyperStudio stack
Description: This HyperStudio Stack defines and illustrates acute, right, and obtuse triangles. This self-extracting archive contains the 1.6MB HyperStudio stack Triangles.
OIPs: 06, 11

Title: Supplementary Angles
Address: http://unite.ukans.edu/UNITEResource/806787717-81ED7D49.rsrc
HyperStudio stack
Description: This HyperStudio stack defines and illustrates supplementary angles. This self-extracting archive contains the 1.3MB HyperStudio Stack Supplementary Angles.
OIPs: 10

Title: Measuring Distances with Triangulation
Address: http://unite.ukans.edu/UNITEResource/783751625-447DED81.rsrc
HyperStudio stack
Description: An activity where the students will determine the distance to the object by sighting a distant object from 2 different locations and knowing the distance between those locations. Use trigonometry to determine and unknown distance. (optional)
OIPs: 13

Title: Slope Intercept
Address: http://www.com/mathSource/Applications/Education/Secondary/0207-526/slope_intercept(92).ma
Requires MathReader
Description: This lesson solves and graphs linear equations, explains the slope- intercept form of a line, and explains some Mathematica language.You must down load Ma threader to use any of the Mathematicas notebooks created for the Wave Project
OIPs: 09

Title: Area of Parallelogram
Address: http://www.com/mathSource/Applications/Education/Secondary/0207-526/Parallelogram_Area(94).ma
Requires MathReader
Description: A graphic demonstration of the area formula for a parallelogram. You must down load Ma threader to use any of the Mathematicas notebooks created for the Wave Project
OIPs: 06

Title: Mathematica Mini - Project Rotation of an Equilateral Triangle
Address: http://www.com/mathSource/Applications/Education/Secondary/0207-526/Rotation,vol,SurfAr(93).ma
Requires MathReader
Description: In geometry, we often have difficulty visualizing the geometric figure that is the result of a rotation about a line. Our purpose here is to pose questions, make conjectures, and then utilize the software called Mathematica to verify our conjectures. The next step will be to make calculations concerning the figure produced. For example, we might want to calculate the volume of the figure. You must down load Ma threader to use any of the Mathematicas notebooks created for the Wave Project.
OIPs: 07, 12

Title: Angles
Address: http://forum.swarthmore.edu/~sarah/hamilton/ham.angles.html
Description: Student resource and activities covering the following topics: Angle Names, Right Angles, Crossing Lines, and Parallel Lines. This title is found in HamiltonÕs Math to Build On.
OIPs: 10

Title: Degrees
Address: http://forum.swarthmore.edu/~sarah/hamilton/ham.degrees.html
Description: Student resource and activities covering the following topics: Fractions of degrees, Rectangles, Squares, Right Triangles, and Circles. This title is found in HamiltonÕs Math to Build On.
OIPs: 10, 07

Title: Right Triangles
Address: http://forum.swarthmore.edu/~sarah/hamilton/ham.rttriangles.html
Description: Student resource and activities covering the following topics: Ratio of Sides, Finding the Length of the Leg and Hypotenuse, Names of the Side, Memory Aid, Finding the Angles of a Right Triangle, and Using Function and Inverse Keys. This title is found in HamiltonÕs Math to Build On.
OIPs: 11

Title: Seeing is Believing
Address: http://forum.swarthmore.edu/~sarah/hamilton/ham.seeing.html
Description: Student drawing activities covering the following topics: Perpendicular Lines, Angles, Right Triangles, and Circles. This title is found in HamiltonÕs Math to Build On.
OIPs: 06, 10

Curriculum page : Math Curriculum

Comments to: OPS Web Team
URL: http://www.ops.org/math/geometry.html
Last update: September 25, 1997