GeoGebra
International Geo Gebra Institute: Geo Gebra
The free mathematics software creates interactive learning material that combines geometry, graphing, tables, algebra, statistics, and calculus. Teachers can download the free open source software to enhance their mathematics lessons. A...
Khan Academy
Khan Academy: Practice: Slope From Two Points
In this practice quiz, students are asked to calculate the slope of a line that passes through two given coordinate pairs. Includes hints.
Texas Instruments
Texas Instruments: Perpendicular or Parallel?
Students can use TI 73 calculators to explore equations that create parallel and perpendicular lines. Teacher will use the screen capture feature of the Navigator system to display students graphs and equations to discuss observations to...
Khan Academy
Khan Academy: Ap Macroeconomics: Lesson: Comparative Advantage/gains From Trade
In this AP Macroeconomics lesson summary from Khan Academy reviews and reminds about the key terms, graphs, and calculations used in analyzing comparative advantage and the gains from trade. Key concepts include how to determine...
PBS
Pbs: Modeling the Linear Relationship Between Fahrenheit and Celsius
Explore the relationship between degrees Fahrenheit and degrees Celsius. This video focuses on developing an expression to model the relationship between the temperature scales using a line graph to calculate slope and the y intercept.