Wolfram Research
Wolfram Math World: Midpoint
This MathWorld site offers a lesson on finding the midpoint of a line segment using a compass and finding the midpoint of the sides of a triangle. This site also has an interesting way of drawing two triangle with equal area by finding...
Shodor Education Foundation
Shodor Interactivate: Interactive: Pythagorean Explorer
Students find the length of a side of a right triangle by using the Pythagorean Theorem and then check their answers.
Shodor Education Foundation
Shodor Interactivate: Squaring the Triangle
Students explore the relationship between the Pythagorean Theorem and right triangles. Teacher resources are included.
Texas Instruments
Texas Instruments: Get to the Point! Coordinate Geometry!
In this activity, students use the Geoboard to determine the area of any polygon using coordinates.
Texas Instruments
Texas Instruments: Exploring the Pythagorean Theorem and Its Applications
Students discover the Pythagorean Theorem by exploring right triangles using Cabri Jr. They apply the Pythagorean Theorem to real-world problems. Also, students create a scatter plot of the data and find an equation that fits the data.
Texas Instruments
Texas Instruments: Going Out of Business
In this activity, students use the Pythagorean theorem to compute the diagonals of rectangles.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: The Distance Formula
Northeast Parallel Architecture Center, Syracuse University, provides a lesson on finding the distance between two points using the coordinates and Pythagorean Theorem.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: Distance Formula
Northeast Parallel Architectures Center at Syracuse University provides a brief description of the distance formula, including two worked examples. One example, shows how the distance formula connects to the Pythagorean Theorem.
University of Vienna (Austria)
Maths Online: Drawing Plane and Coordinate System
Interact with these Applets on the Cartesian coordinates, the Coordinate system, the Polar coordinates, and the Oblique coordinates.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: El Teorema De Pitagoras
Interactive resources and activities that could be used in the classroom either as an introduction or review to a unit dealing with the Pythagoras Theorem. [Requires Java.]
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: El Teorema De Pitagoras
In Spanish. In this interactive activity you can learn and understand the concept of the Pythagoras theorem.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Rectas Notables De Un Triangulo
In Spanish. Interactive activities dealing with the concept of angle bisector, median and altitude of a triangle. A description of the circumcenter and centroid are given along with a visual representation. [Requires Java.]
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: El Teorema De Pitagoras
In this unit you can gain some knowledge about the Pythagorean Theorem. You can learn about the famous mathematician, familiarize with the theorem and then use your knowledge to find the area of plane figures.
Oswego City School District
Regents Exam Prep Center: Working With Distance (Length)
A seven-question quiz in which you'll answer questions about distance. You'll need to know how to find distance between points on a coordinate plane.
Other
Soft Chalk Llc.: Polygons in the Coordinate Plane
This site provides short lesson reviews on how to plot points on a coordinate plane to form polygons. It also gives quick checks in between.
Other
Karl's Calculus Tutor: Basic Algebra Concepts
This site is a comprehensive review of algebraic basics including equations, the distributive law, the equation of a straight line, quadratic equations, polynomials, the difference of squares, the Pythagorean distance formula, and...
Mathematics for Teaching
Mathematics for Teaching: Teaching Mathematics With Geo Gebra
Students complete activities using GeoGebra to explore geometry concepts such as the coordinates of points.
Other
The mathlab.com: Ultimate Pythagorean Theorem Test
Open the nine clue boxes. Solve the problems inside. Each successful solution will supply you with a clue to use in the decoder grid to determine the password to claim the treasure.
Other
The mathlab.com: Sophia's Tree of Mysteries
There are 10 questions hidden in the tree. Click around to find them. As you find each answer, use the decoder grid below to find its matching letter to determine the required password to enter the restricted area.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: El Plano Cartesino
Interactive activities that will help you plot points on the Cartesian Coordinate Plane.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Demostraciones Del Teorema De Pitagoras
An interactive visual aid with a good explanation of the Pythagoras Theorem. In this unit five different demonstration will be given.
Math Planet
Math Planet: Algebra 1: Radical Expressions: The Distance and Midpoint Formulas
Distance and midpoint formulas are explained through the use of examples and a video lesson. [1:58]
Math Planet
Math Planet: Geometry: Finding Distances and Midpoints
Discover how to find distances and midpoints by viewing examples and a video lesson. [1:07]
McGraw Hill
Glencoe Mathematics: Online Study Tools: Self Check Quiz on Right Triangles
The online assessment demonstrates knowledge of concepts utilized in Geometry. The multiple choice questions test students on right triangles and trigonometry.