Other
Git: What Is the Slope Intercept Form of a Line?
Not only does this site show what the slope-intercept form is, but it helps you find the slope and the intercept of a line. There is also additional information on parallel lines, parametric form, and the distance between two points.
Khan Academy
Khan Academy: Rendering: Ready to Dive Into Some Math?
In this instructional activity we are going to explore the most fundamental calculation a ray tracer performs: ray object intersection. It also lists information you need to know before you start this instructional activity.
Wolfram Research
Wolfram Math World: Triangle Centroid
This site from MathWorld gives a diagram of a triangle with its centroid labeled. The site details how to find the centroid with links to the key terms. The site details many other interesting properties of the triangle centroid.
Khan Academy
Khan: Lesson 5: Relationships Among Linear Equations, Lines in Coordinate Plane
This lesson focuses on the relationship between algebraic, graphical, and contextual expressions of linear equations.
Common Core Sheets
Common Core Sheets: Expressions & Equations 8.ee.8a Worksheets
Teachers can assess students' knowledge of expressions and equations with these printable worksheets. You can even create your own learning exercise.
Other
Nearpod: Systems of Equations & Solutions
In this lesson on systems of equations, 8th graders will learn how to solve systems by graphing and examine graphs to determine if a system has one solution, infinite solutions, or no solution.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Iniciacion a La Programacion Lineal
In Spanish. Practice how to find the value of linear functions at the point of intersection and learn how to locate the maximum and minimum value with this interactive activity.
PBS
Pbs Learning Media: Two Sightings, Different Information
Jackie and Matt are looking at the same object along two different lines, in this video segment from Cyberchase.
Purple Math
Purplemath: Systems of Linear Equations: Definitions
Covers the basic definitions involved in systems of linear equations.
CK-12 Foundation
Ck 12: Geometry: Basic Geometric Definitions
[Free Registration/Login may be required to access all resource tools.] In this lesson students define and use geometric terms. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.
Quia
Quia: Geometric Terms Word Search
Do you need practice remembering or learning different geometry vocabulary words and definitions? This word search is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if you are...
Quia
Quia: Geometric Terms Flash Cards
Do you need practice remembering or learning different geometry vocabulary words and definitions? The flash cards at this web site are for you! There is a link to a list of terms with definitions you can click if you want to see if you...
National Humanities Center
National Humanities Center: Teacher Serve: Divining America: Religion in American History
A collection of scholarly essays consisting of instructional guides accompanied by commentary. Designed to help teachers of American history bring students to a greater understanding of the role religion has played in the development of...
Oswego City School District
Regents Exam Prep Center: What Is a Locus?
This site defines what a locus is and offers links to five locus theorems. Walks you through the six "Steps to solving a locus problem."
Oswego City School District
Regents Exam Prep Center: Compound Locus
Loci are applied to word problems in this online tutorial. Practice problems are included. The teacher resource page supplies practical problems.
Other
Platonic Realms: Conics
This resource provides in depth information on the conic sections. Click on the underlined words for definitions and diagrams.
Oswego City School District
Regents Exam Prep Center: The Basic Locus Theorems
A wealth of resources for teachers introducing locus theorems to students. Lessons cover simple definitions, provide examples and diagrams, and offer connections to real-life situations. Practice exercises offer students online quizzes...
Illustrative Mathematics
Illustrative Mathematics: G Mg, G Gmd Global Positioning System Ii
Satellites communicate with a GPS device and establish the distance between them and their locations. The set of points at a fixed distance from a satellite form a sphere so when the GPS receives its distance from a given satellite, this...
Texas Instruments
Texas Instruments: Sailing Through the Fog: Solving Systems of Linear Equations
Tracking equipment is used to help ship navigators traveling in dense fog determine if they are in danger of colliding with other ships that may be in the area. For this activity, we are going to assume two ships are traveling along...
Alabama Learning Exchange
Alex: Build a City on Geometry
The middle schoolers will be split into small, cooperative groups and build a city following specific guidelines. The students will learn how a city is constructed with angles, intersections, parallel, intersecting, and transversal...
Texas Instruments
Texas Instruments: Numb3 Rs: Mapping Fireprints
Based off of the hit television show NUMB3RS, this diverse lesson has students perform linear regression analysis (to compare two fire variables), check three-dimensional points using a planar equation, and evaluate points to determine...
Texas Instruments
Texas Instruments: Matching Quadratics Equations With Pictures!
Students will submit equations in vertex form that will match the roller coaster using activity center. They will also find the intersection point of two roller coasters.
Texas Instruments
Texas Instruments: The Quest for Roots of Higher Order Equations
Students learn how to approximate the roots of any polynomial equation of any order by first using tables, and then by tracing along the graph to the point where the curve intersects
National Council of Teachers of Mathematics
Nctm: Illuminations: Pan Balance
A pan balance helps students visualize what value for x will make two expressions equivalent. The computer applet graphs the lines and shows the intersection point.