Curated OER
Doing Battle With Radical Equations
Students observe and solve examples of equations involving radicals. They complete a Doing Battle With Radical Equations worksheet and checklist.
Curated OER
Easy Worksheet: Additive Inverses
In this additive inverse worksheet, learners solve 8 short answer problems. Students identify the additive inverse of a given integer such as negative thirty four or positive twenty five.
Curated OER
Additive Inverses
Students investigate properties of additive inverses. In this properties of additive inverses lesson, students discuss the what it means for two numbers to be opposites. Students discuss representing opposite numbers using a negative...
Curated OER
Using inverse Operations to Solve Equations
Fifth graders solve equations. In this algebraic equations lesson plan, 5th graders use the inverse operation to solve an equation. The teacher reminds students to perform the operation on both sides of the equation. This lesson plan...
Curated OER
Matter
Students complete a unit of activities to learn about states of matter and how to measure matter. In this matter activity, students complete 8 lessons to learn about matter, its states, and how to measure matter.
Curated OER
Using Inverses to Check Answers
In this inverse worksheet, students use inverses of math problems to check their answers. Students complete 12 problems where they use inverses to check answers.
Curated OER
Inverse Relationships Add/Sub (C)
In this inverse relationships worksheet, students use the given numbers to solve the addition and subtraction sentences to solve the 16 inverse relationship problems.
Curated OER
Binary Operations
In this binary operations worksheet, 7th graders solve and complete 12 different problems that include various types of binary operations. First, they determine if the operation used is commutative. Then, students name the identity...
Curated OER
Decreasing Differences
Students identify and interpret the pattern within a set of numbers using words. Then they write rules in words using complete sentences. Students also highlight two similar sequences with the same difference in order to get the first...
Curated OER
Fact Family Frenzy
Second graders explore fact families and inverse relationships between addition and subtraction. They use flashcards to model the inverse relationships. Students complete the equations for each fact family.
Curated OER
Clay Gargoyles
Students observe Gargoyles and listen to an explanation of their place in art history. They create gargoyles with clay and paint with stone finish.
Massachusetts Institute of Technology
Mit: Useful Trigonometric Identities
This list of trigonometric identities includes the factoring formulas near the bottom. A great tool for reference.
Texas Instruments
Texas Instruments: Functions, Relations, and Inverses
This set of questions pertains to definition of functions, relations, inverses, and composition. Questions are multiple choice, true/false, and short answer. Solutions and explanations are included.
Clark University
Clark University: Dave's Short Trig Course
This Clark University trigonometry tutorial site features questions and answers about what students can learn from trigonometry.
Lawrence Hall of Science
The Math Page: Skill in Algebra: Some Rules of Algebra
Here is a site that clearly and thoroughly explains many rules of algebra, such as the commutative property and the addition property of equality. There are example problems solved, problems for the student to attempt, and answers to the...
Khan Academy
Khan Academy: Find the Inverse of a 2x2 Matrix
Find the inverse matrix of a given 2x2 matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Khan Academy
Khan Academy: Determine Inverse Matrices
Given a pair of matrices, determine whether they are inverses of each other. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Purple Math
Purplemath: Matrix Inversion: Finding the Inverse of a Matrix
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...
Khan Academy
Khan Academy: Determine Invertible Matrices
Given a 2x2 matrix, determine whether it has an inverse. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Other
Technical Tutoring: Trigonometry: The Very Fast Review
This site is a quick review of the functions and identities in trigonometry. Very helpful site.
Varsity Tutors
Varsity Tutors: Hotmath: Inverse of a Matrix
Find a concise explanation of the inverse of a matrix. An example is given and clearly explained.
Wolfram Research
Wolfram Math World: Symmetry
This site provides a detailed explaination of symmetry and many links to related topics.
Interactive Mathematics
Interactive Mathematics: Finding the Inverse of a Matrix
Two methods are demonstrated for finding the inverse of a matrix. The examples are detailed and easy to follow. Several interactive examples are also provided.