Illustrative Mathematics
Illustrative Mathematics: G Srt Ask the Pilot
In the July 2013 issue of United Airlines' Hemisphere Magazine, a pilot responded to a question about how far in the distance he could see at different altitudes. The solution involved right triangles, lines of tangency to a circle, and...
Illustrative Mathematics
Illustrative Mathematics: A Rei Solution Sets
For this task, students are shown the graphs of two equations, with areas bounded by their lines and intersections shaded in different colors. They are asked to write a system of equations or inequalities for each shaded area and explain...
University of South Florida
Florida Center for Instructional Tech: Walking the Plank
Young scholars use weight to collect data and investigate the linear relationship. This activity uses a graphing calculator.
Science Education Resource Center at Carleton College
Serc: Mineral Density: Teaching Accuracy, Slope, and Percent Error
Students explore the meaning of density and use their math skills to graph mass/volume data, write an equation for a line, and interpret the slope of the line. Students also find the density of two unknown mineral samples and use those...
Texas Instruments
Texas Instruments: Looking for Mr. Right Triangle
Navigator Activity: This is a review of the right triangle in the coordinate plane. Given two lines (2 really nice ones) the students write the equation of the 3rd line to create a right triangle. They find the vertices of the triangle...
Texas Instruments
Texas Instruments: Match This
In this activity, students will match their motion to a given graph by moving back and forth in front of a CBR unit. They will then describe their movements by writing a piece-wise defined equation for the motion.
Khan Academy
Khan Academy: Writing Slope Intercept Equations
Describes how to write a linear equation by using the y-intercept and another point on the line. Includes practice problems.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Fitting Equations to Data
Five problems present practice using data to write equations and linear models. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to...
Khan Academy
Khan Academy: Plotting Inequalities
Create number line graphs of inequalities. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Purple Math
Purplemath: Solving Linear Inequalities: Introduction and Formatting
This resource demonstrates how to solve linear inequalities step-by-step and shows four different solution formats/notations viz. inequality notation, set notation, interval notation, and the last "notation" which is more of an...
Purple Math
Purplemath: Solving Inequalities: An Overview
A discussion on how to solve linear and nonlinear inequalities is presented. Both the Test Method and the Factor Method of checking positive/negative intervals are included as part of the discussion.
Curated OER
Proceedings of the Friesian School/the Quantacized Atom
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Curated OER
Proceedings of the Friesian School/the Quantacized Atom
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Curated OER
Proceedings of the Friesian School/the Quantacized Atom
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Curated OER
Proceedings of the Friesian School/the Quantacized Atom
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Curated OER
Proceedings of the Friesian School/the Quantacized Atom
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Curated OER
Proceedings of the Friesian School/the Quantacized Atom
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Curated OER
Proceedings of the Friesian School/the Quantacized Atom
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Curated OER
Proceedings of the Friesian School/the Quantacized Atom
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
Other
Technical Tutoring: Linear Functions and Straight Lines
Learn how to write equations for linear functions in all three forms: point-slope, slope-intercept, and general. Also look at equations for parallel and perpendicular. The page gives an explanation of how to obtain the point slope form...
Khan Academy
Khan Academy: Inequality From Graph
Practice writing equations of inequalities graphed on number lines. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.