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Grades: Standards: Lessons Searched Upon:addition

Your search returned these 12 highlighted lessons...

	Barbie Bungee Examining Linear Functions and the Meaning of Slope
	Constant Dimensions Using Measurement and Algebra to Investigate the Ratio of Length to Width
	Count on Math Developing Number Sense through Estimation and Data Collection
	Eye to Eye Comparing Data Sets and Formulating Questions
	Going Places Measuring and Mapping to Explore Spatial Relationships, Principles of Location, and Navigation
	Let's Count to 10 Identifying, Writing, and Representing Numbers From Zero to Ten
	Polygon Capture Playing a Geometry Game to Learn the Properties of Polygons
	Reflect on This Using a Hinged Mirror to Examine the Interior Angles of Regular Polygons
	To Fret or Not To Fret Exploring the Math Behind the Placement of Frets on Stringed Instruments
	Too Big or Too Small? Developing Number Sense through Large and Small Numbers
	Trout Pond Using Algebra and Discrete Mathematics to Investigate Population Changes
	Whelk-Come to Mathematics Using Rational Functions to Investigate the Behavior of Northwestern Crows

...as well as these additional 121 lessons...

	A Tale of Two Stories Using The Three Little Pigs and Cinderella to Recognize Similar Characteristics
	Accessing and Investigating Population Data Using Population Pyramids and Creating Graphs of State Population Data
	Algebraic Transformations Investigating the Commutative and Associative Properties Using Geometric Shapes
	All About Multiplication Exploring the Meanings and Representations of Multiplication
	Amazing Attributes Sorting and Organizing Buttons and Using Representations to Display Data
	Amazing Profit Investigating Linear Equations using a Real-World Scenario
	Apple Pi Discovering the Formulas for Circumference and Area
	Arithme-Tic-Toc Understanding Modular Arithmetic With Analog Clocks (and Other Real-World Examples)
	As People Get Older, They Get Taller Comparing Height and Graphing Change Over Time
	Baby Weight Doubling and Halving Numbers
	Bagel Algebra Using Proportional Reasoning For Price Comparisons
	Bean Counting and Ratios Using Sampling to Generate Equivalent Ratios
	Begin With Buttons Exploring Logical And Numerical Relationships
	Big Math and Fries Creating a McDonald's Meal Plan on the Zone Diet
	Birthday Paradox Using a Monte Carlo Simulation Performing Graphical Analysis of the Birthday-Problem Function
	Birthdays and the Binary System Exploring Patterns and Place Value in the Binary System
	Block Pounds Weighing Variables to Determine Their Values
	Boxing Up Simulating Probability Situations Using Box Models
	Calculating Patterns Representing Patterns with Shapes and Numbers
	Capture - Recapture Using Samples of Beans and Solving Proportions to Find the Population of Birds in a Forest
	Cardiac Output, Rates of Change, and Accumulation Exploring the Measurement of Blood Pumped by the Heart
	Chairs Around The Table Investigating Linear Patterns
	Check That Digit Applying Modular Arithmetic to Barcodes and Credit Cards
	Clowning Around Discovering Combinations
	Code Crackers Exploring Number Concepts through Cryptology
	Combinations Counting the Possibilities for Ice Cream Cones and Outfits
	Comparing Connecting Cubes Exploring Five Subtraction Models — Counting, Sets, Number Line, Balanced Equations, and Inverse of Addition
	Computer Animation Multiplying Matrices to Transform Drawings
	Corner to Corner Exploring Quadrilaterals, Diagonals, and the Pythagorean Theorem
	Counting Embedded Figures Look for Patterns and Forming Generalizations
	Counting the Trains Investigating Patterns That Lead to Functions
	Covering the Plane with Rep‑Tiles Creating Larger, Similar Figures With Tesselations
	Cutting Conics Investigating Conic Sections using a Double-Napped Cone
	Describe the Graph A Unique Way to Review Plotting Points
	Determining Functions Using Regression Determining an Appropriate Function to Fit Data
	Dirt Bike Dilemma Understanding and Solving Linear Programming Problems
	Do It with Dominoes Exploring Four Addition Models — Counting, Number Line, Sets, and Balanced Equations
	Do You Hear What I Hear? Exploring the Dynamics of Sound Waves
	Everything Balances Out in the End Building Algebraic Understanding
	Exploration of a Balance Observing Relationships between Mass, Length, and Position of a Fulcrum
	Exploring Equations Using Expressions and Equations on the Pan Balance Tool
	Exploring Krypto Playing a Numbers Game to Develop Computational Skills and Conceptual Understanding
	Exploring Linear Data Modeling Data From Car Repair Costs and Sports Contexts
	Extending to Symbols Moving from Numeric to Algebraic Notation
	Factor Trail Game Using a Game to Help Students Practice Factoring
	Fibonacci Nim Using Number Representations to Find the Strategy for Various Nim Games
	Fishing for the Best Prism Students Use Polydrons to Build Nets and Create the Most Appealing Fish Tank
	Food Pyramid Power Using Algebraic Thinking to Discover Properties of Addition
	Fractional Clothesline Using a Clothesline to Understand Fractions Greater and Less Than One
	Fun with Fractions Developing the Region Model
	Fun with Fractions Developing the Length Model
	Geometry in the World of Art Using the Works of Wassily Kandinsky to Exemplify Geometric Shapes
	Geometry of Circles Exploring The Relationship Between Diameter, Circumference, And Area
	Getting into the Electoral College Exploring the Mathematics and Paradoxes of the Election System in the United States
	Golden Ratio Extending the Fibonacci Sequence through an Algebra Exploration
	Grid and Percent It Using a 10 × 10 Grid to Solve Percent Problems
	Hanging Chains Determining the Equation of a Parabola
	How Do You Organize the Counties in Your State? Ordering, Comparing, and Writing Census Data in Multiple Ways
	How Many More Fish? Exploring Five Representations of Subtraction
	How Tall? Discovering the Correlation between Body Measurements and Height using Linear Regression
	Ideas with Food Applying Various Mathematical Concepts While Preparing Simple Foods
	Impact of a Superstar Using Regression Analysis To Detect Outliers
	Inclined Plane Rolling Balls Down Ramps of Varying Lengths and Heights
	Inequalities in Triangles Investigating The Relationship Between Sides And Angles In A Triangle
	Investigating Shapes (Triangles) Recognizing, Constructing, and Identifying Triangles
	I've Seen That Shape Before Learning the Names of Solid Geometric Shapes and Exploring Their Properties
	Junior Architects Designing Your Dream Clubhouse Using Measurement and Geometry
	Law of Sines and Law of Cosines Discovering Formulas for Triangle Measure
	Learning about Properties of Vectors and Vector Sums Using Dynamic Software Understanding Vectors with Dynamic Geometric Representations
	Let's Count to 20 Making Groups of 10 to 20 Objects, Connecting Number Names to the Groups
	Let's Count to 5 Connecting Number Words to Groups of Objects
	Let's Learn Those Facts Playing Games and Using Number Properties to Learn Addition Facts
	Links Away Exploring Subtraction Properties with Five Models of Subtraction
	Location, Location, Location Exploring Distances to the Sides in a Regular Polygon
	Long Distance Airplanes Increasing the Flight Distances of Paper Airplanes
	Macaroni Math Exploring "Take Away" Subtraction in Several Different Contexts
	Magnificent Measurement Using Objects, Pictures, & Symbols to Measure Length, Area, Volume, Time, & Weight
	Makeshift Measurements Using Common Objects as Benchmark Measurements
	Making Sense of Percent Concentrations Using Beads and an Antifreeze Chart to Understand Mixture Problems
	Mars Orbit Using Parametric Equations to Investigate the Relative Orbits of the Planets
	Math Vocabulary Bingo Emphasizing the Understanding and Application of Mathematical Terminology with an Interactive Teaching Tool
	Mathematics and Football Analyzing Information Represented Graphically
	Modeling Orbital Debris Problems Using Technology to Develop an Understanding of Functions and Modeling
	Multiplication: It's in the Cards Using the Properties of Multiplication to Master the Multiplication Facts
	My Pet Creating a Map of a Pet
	Numerical and Categorical Data Collecting, Organizing, and Displaying Data to Answer Questions
	On Fire Using Measurement to Design A Fire-Wise Property
	Order of Operations Bingo Evaluating Expressions to Play Bingo
	Patterns That Grow Extending Number and Shape Patterns
	Paying for Your Wheels The Algebra of Gas Consumption
	Petals Around the Rose Identifying Patterns in a Dice Game
	Picture This Collecting Data About the Number Sentences People Associate with a Picture
	Pieces of Proof Using puzzle pieces to put together formal proofs, from a collection of statements and reasons.
	Planning a Trip Creating a Travel Plan by Studying Maps, Considering Possible Routes, and Examining Airfares
	Power of Points Using Dynamic Geometry Software to Investigate the Power of Points With Respect to a Circle
	Power Up Using Batteries as a Physical Model to Explore the Addition of Signed Numbers
	Powerful Patterns Exploring Patterns from Physical Education, Science, and Social Studies
	Printing Books Exploring the Relationships Among Lines, Slopes, and y‑Intercepts in the Context of Printing Their Algebra Textbooks
	Rates and Taxes Determining the Amount of Tax a Family Will Pay Based on a Certain Income
	Real Estate Tycoon Working With Fractions and Decimals to Design and Sell a House and Invest the Profits
	Scaling Away Investigating the Effects of Scale Factor
	Shedding Light on the Subject Developing and Analyzing Exponential Models For The Behavior of Light Passing Through Water
	Shopping Mall Math Developing Number Sense at a Shopping Mall
	Shrinking Candles, Running Water, Folding Boxes Finding Functions to Describe Real-World Phenomena
	State Names Investigating Real-World Data
	Sum Search Finding Sums of 5, 6, 7, and 8
	Summer Daze A Pie Graph review of Fraction, Decimal, and Percent
	Supply and Demand Using a System of Linear Equations to finding the Equilibrium Point for Supply and Demand Problems.
	Supreme Court Welcome Exploring the Handshake Problem
	Take Away Introducing Young Children to Subtraction
	Taking Its Toll Examining the Relationship Between Tolls and Distance
	The Cost of Being Late Calculating the Impact of an Outstanding Balance and Interest Rates
	Transformations and Frieze Patterns Students will identify and create Frieze patterns using transformations to identify the various classes of Frieze patterns.
	Triangle Classification Using Geometric Theorems to Classify Triangles by Angles and Sides
	Trigonometry for Solving Problems Enhancing the Appreciation of Trigonometry as a Problem-Solving Tool
	Using Cubes and Isometric Drawings Explore Polyhedra With Three-Dimensional Representations
	Using NBA Statistics for Box and Whisker Plots Creating and Comparing Box-and-Whisker Plots Using Information from Basketball Statistics
	Varying Motion Exploring Varying Displacement, Velocity, and Acceleration
	Walk the Plank Using a Scale to Investigate x‑Intercepts and Negative Slope
	Water, Water Comparing Water Usage of Students to Astronauts
	Will the Best Candidate Win? Explore the Advantages and Disadvantages of Alternative Voting Methods

The National Council of Teachers of Mathematics is a public voice of mathematics education, providing vision, leadership, and professional development to support teachers in ensuring mathematics learning of the highest quality for all students. The views expressed or implied, unless otherwise noted, should not be interpreted as official positions of the Council.