Curated OER
Production of Hydrogen
Students generate hydrogen gas and examine some of its properities through an experiment. In the experiment, a wood splint is lit along with a candle, then the reaction occurs within the mixture. There are questions for the student to...
Texas Education Agency
Texas Gateway: Solving Systems of Equations Using Substitution
Given a system of two equations where at least one of the equations is linear, the student will solve the system using the algebraic method of substitution.
CK-12 Foundation
Ck 12: Evaluate Limits Using Substitution
Finding limits for the vast majority of points for a given function is as simple as substituting the number that x approaches into the function.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Solving Linear Systems by Substitution
Twenty-seven problems present a variety of practice solving linear systems by substitution. 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...
Free Reading
Free Reading: Amplify Education, Inc.: Switch the Sound Activity, Phoneme Substitution
A classroom activity to help the student determine what is different about a one syllable word. The teacher says a word, then changes one sound in the word, and asks the students what is different.
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Systems of Linear Equations in Two Var.
This tutorial will guide you through several tasks associated with systems of linear equations in two variables. Complete with definitions, problems with step-by-step solutions, and example exercises for you to complete and check.
Math Planet
Math Planet: The Substitution Method for Solving Linear Systems
A way to solve a linear system algebraically is to use the substitution method. The substitution method functions by substituting the one y-value with the other. This resource explains this method by showing an example along with a video.
CK-12 Foundation
Ck 12: Algebra: Systems Using Substitution
[Free Registration/Login may be required to access all resource tools.] Isolate and substitute for one variable to solve systems of equations in two variables.
Khan Academy
Khan Academy: Systems of Equations With Substitution
Solve systems of equations where one of the equations is solved for one of the variables. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Practice: Solve Systems of Equations With Substitution
In this practice quiz, students are given a system of two equations and asked to substitute the information from one equation into the other in order to determine x and y. Includes hints.
Cuemath
Cuemath: Linear Equations in Two Variables
A comprehensive guide for learning all about linear equations in two variables with definitions, how to solve them, solved examples, and practice questions.
Wisconsin Response to Intervention Center
Wisconsin Rt I Center: Phoneme Substitution [Pdf]
Classroom teachers will learn how to use phoneme substitution as an instructional strategy. Teachers will learn direct instructional techniques for phoneme substitution. Word picture cards are included to be used with phoneme...
Texas Instruments
Texas Instruments: Solve Linear Systems by Graphing, Substitution, Elimination
Students will solve systems of linear equations by a variety of methods: graphing, substitution, and elimination. The questions are multiple-choice and fill-in-the-blank.
McGraw Hill
Glencoe Mathematics: Quiz on Solving Systems of Equations in Three Variables
The online assessment demonstrates knowledge of advanced mathematical concepts in Algebra II. The questions test students on solving systems of equations in three variables. Topics include solving systems using the substitution and...
Khan Academy
Khan Academy: Evaluating Expressions With Two Variables
Practice evaluating expressions in two variables by plugging in values for the variables. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Algebra: Systems Using Substitution
[Free Registration/Login may be required to access all resource tools.] Solve linear systems by using substitution.
Khan Academy
Khan Academy: Evaluating Expressions With Two Variables: Fractions and Decimals
Practice evaluating expressions in two variables by plugging in values for the variables. These problems include some fractions and decimals. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch...
Purple Math
Purplemath: Basic Number Properties: Associative, Commutative, and Distributive
This Purplemath lesson includes many different number properties explained by using examples.
ClassFlow
Class Flow: Integration by Substitution and Pattern Recognition
[Free Registration/Login Required] Two different techniques for integrating composite functions, pattern recognition and change of variables, are discussed using a process called u-substitution. This pattern recognition uses both of the...
Mangahigh
Mangahigh: Algebra: Solve Systems of Equations Substitution Method
Students watch an online tutorial on the concept of solving systems of equations using the substitution method. After watching, students test their knowledge by attempting ten practice problems that increase or decrease in difficulty...
Mangahigh
Mangahigh: Algebra: Derive Results Using Algebraic Substitution
This site provides students practice with the concept of evaluating expressions. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.
E-learning for Kids
E Learning for Kids: Math: Wild Park: Number Patterns
Students will play learning games that teach students how to graph patterns and tables.
Science Struck
Science Struck: Examples of Single Replacement Reactions
Explains what a single replacement, or displacement, reaction is; describes the two types - cation and anion replacement reactions; and gives examples of chemical reaction equations for each.
Harvard University
Substitution Matrices: Harvard University
Substitution matrices can be used to align two protein sequences.