Curated OER
Seesaw Balances
Students determine how the weights of 7 objects on a seesaw can vary and still be in balance. They also write equations in algebraic terms, how to change 3 variables in an equation expressed in algebraic terms to obtain the correct...
Curated OER
Solving One Step Equations Using Algebra Tiles
Students solve linear equations. In this algebra lesson, students solve equations using addition, subtraction, division and multiplication. They evaluate and simplify functions.
Curated OER
Algebra: Lesson 4
Eighth graders participate in using algebraic proportional reasoning to find the missing amount that balances on a scale. Substitution is used to discover the missing objects on a scale. They answer multiple choice questions that are...
Concord Consortium
Function Project
What if a coordinate plane becomes a slope-intercept plane? What does the graph of a linear function look like? Learners explore these questions by graphing the y-intercept of a linear equation as a function of its slope. The result is a...
Curated OER
Properties of Equality
What assumptions are made in order to solve equations? An instructional slideshow provides an overview and guided examples of how properties of equality can be used to justify each step in solving equations.
Curated OER
Robo-Pull
Students solve linear equations using two steps. In this algebra lesson, students add, subtract, multiply and divide to solve linear equations. They apply concepts of equations to a robot pulling cargo.
Curated OER
Rotational Equilibrim: A Question of Balance
Students explore the concepts of rotational equilibrium. They examine the history Alexander Calder and his mobiles. Students solve simple algebraic equations. They predict, draw conclusions, graph equations and examine the rotational...
Curated OER
Integer Algebraic Addition
Students use algebra tiles to solve linear equations with integer solutions. In this algebra lesson plan, students use the additive inverse and the zero pair concept.
Curated OER
Awareness of Pre-algebra Concepts
Pupils work in a cooperative group of three to solve algebraic equations with roles assigned for manipulator, recorder, and checker. They utilize hands-on learning materials imbedded in the lesson plan.
Curated OER
Selling Fuel Oil at a Loss
Learners are asked to advise a fuel oil dealer on a possible investment. They must use two different rates to set up an equation and solve to determine how much oil he should sell now to break even after selling the remainder the next...
Balanced Assessment
Pick a Pattern or Two
Math is all about finding patterns. In this ask, scholars first investigate a sequence formed by squaring the sum of the digits in the previous term. They go on to investigate a second sequence and write an algebraic expression for this...
Curated OER
Cantilevers
Students perform an experiment to find the linear relationship between the appllied weight and the bend of the cantilever. In this linear relationships instructional activity, students follow detailed directions to set up an experiment....
Curated OER
Moving Straight Ahead
Students analyze the relationship between speed, time and distance. In this math lesson, students plan a school trip. Students determine the efficiency and cost effectiveness of a trip.
Scholastic
Scholastic: Math Maven's Mysteries: The Secret of E. Quation the Great
Want to figure out a magician's secret for a cool balancing trick? Use your algebra knowledge to discover how this magic trick was done.
National Council of Teachers of Mathematics
Nctm: Illuminations: Pan Balance Numbers
Use this tool to find out if expressions are equal to each other. If the pan balance levels out then the expressions are equal.
Scholastic
Scholastic: Solving the Unknown With Algebra
Students will learn and reinforce skills for solving for unknowns, manipulating equations while keeping them in balance, using formulas to solve real-world challenges, and working with proportions, radicals and exponents.
TeachEngineering
Teach Engineering: The Balancing Act
Students are given the opportunity to visualize and interact with concepts they have already learned, specifically algebraic equations and solving for unknown variables. Students construct a balancing seesaw system (LEGO Balance Scale)...
Khan Academy
Khan Academy: One Step Multiplication & Division Equations
Based on our understanding of the balance beam model, we know that that to keep a true equation, we always have to do the same thing to both sides of an equation. But how do we know what to do to both sides of the equation? Learn to...
Math Is Fun
Math Is Fun: Introduction to Algebra
How is algebra like solving a puzzle? What is a variable? This simple introduction to algebraic equations offers examples of how to solve for "x" and how to balance equations. Follow a link to a "Simple Algebra Worksheet" when you're...
Utah Education Network
Uen: Pyramid Equality
This lesson plan will result in students solving equations and using properties to form equivalent expressions. It provides downloadable PDF resources to go along with the activity as well as strategies for diverse learners, extensions...
Math Is Fun
Math Is Fun: Balance When Adding and Subtracting
An interactive scale shows you how to deal with numbers and variables when solving simple algebraic equations.
Math Is Fun
Math Is Fun: Introduction to Algebra: Multiplication
How do you solve for a variable that is multiplied by another number in an algebraic equation? Find the answer to this question and see examples showing how to solve other types of algebra "puzzles."
PBS
Pbs Learning Media: Solving an Equation for a Missing Value
The CyberSquad solves a number puzzle to help save Motherboard in this video segment from Cyberchase.