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Lesson Plan
Curated OER

TE Activity: Write On!

For Teachers 4th - 5th
Students write a book, newspaper, or other chose published writing that explains the connection between engineering and the environment. They determine why engineers need to be good communicators.
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Lesson Plan
Curated OER

Blast Off

For Teachers 3rd - 5th
Students investigate how rocket thrust is generated with propellant. They listen to a teacher-led lecture, discuss Newton's third law of motion, answer discussion questions, and view photos of rockets and rocket designs.
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Handout
Purple Math

Purplemath: Complex Numbers: Introduction

For Students 9th - 10th Standards
This website provides an in-depth lesson on complex numbers. You learn about simplifying, adding, and multiplying complex numbers by viewing example problems that are worked through step-by-step. Continue on to pages 2 and 3 which...
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Activity
Purple Math

Purplemath: Solving Exponential Equations: Solving From the Definition

For Students 9th - 10th Standards
This Purple Math site has many examples of exponential equations, without using logarithms.
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Handout
Purple Math

Purplemath: Vertical Asymptotes

For Students 9th - 10th Standards
This Purple Math lesson provides an explanation and examples on vertical asymptotes.
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Handout
Purple Math

Purplemath: Asymptotes

For Students 9th - 10th Standards
This Purple Math lesson provides practice problems for finding various types of aysmptotes. Each problem is worked out and explained.
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Handout
Purple Math

Purplemath: Distance Formula

For Students 9th - 10th Standards
A concise presentation of a lesson showing how the Distance Formula is really just the Pythagorean Theorem, and how it can be used to find the distance between two sets of coordinates.
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Graphic
Purple Math

Purplemath: Solving Inequalities: An Overview

For Students 9th - 10th Standards
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.
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Unit Plan
Purple Math

Purplemath: Graphing Linear Equations: T Charts

For Students 9th - 10th Standards
A nice tutorial on how to graph linear equations. Goes through the process step by step and gives numerous examples.
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Handout
Purple Math

Purplemath: Slope: Parallel and Perpendicular Lines

For Students 9th - 10th Standards
Describes and gives good examples relating to the slopes of parallel and perpendicular lines.
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Activity
Purple Math

Purplemath: Complex Fractions

For Students 9th - 10th
A brief lesson, including good examples, on complex fractions is provided by PurpleMath.
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Handout
Purple Math

Purplemath: Mean, Median, Mode, and Range

For Students 9th - 10th Standards
Mean, median, and mode are three kinds of "averages". The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers. To...
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Handout
Purple Math

Purplemath: Matrix Inversion: Finding the Inverse of a Matrix

For Students 9th - 10th Standards
Inverse matrices are very useful for solving matrix equations. But, given a matrix, how do you invert it? How do you find the inverse? The technique for inverting matrices is kind of clever. For a given matrix A and its inverse A-1, we...
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Handout
Purple Math

Purplemath: Solving Logarithmic Equations: Solving From the Definition

For Students 9th - 10th Standards
This Purplemath lesson teaches students to solve logarithmic equations. There are many examples and links to solving with exponentials and calculator considerations at the top of the lesson.
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Handout
Purple Math

Purplemath: Solving Linear Equation With Parentheses; "No Solution" Equations

For Students 8th Standards
Learn how to solve linear equations with parenthesis and equations with no solutions. Please be aware that this is an ad heavy resource.