Curated OER
Two-Step Problems and Money Concepts
Elementary schoolers solve two-step equations and practice money concepts. They solve multi-step addition and subtraction contextual problems and apply money concepts to real life situations. Pupils use pictures and counters to help them...
Curated OER
Divisibility Rules Using Scientific Calculators
Young learners apply divisibility rules to determine if a number is a factor of another number. They discuss what numbers are factors of another number and identify patterns using divisibility rules.
Alabama Learning Exchange
As If Numbers Weren't Complex Enough Already!
The class explores the concept of complex numbers on a website to generate their own Mandelbrot sets. They will practice performing operations with complex numbers and then to get a visual understanding, graph the absolute value of a...
Curated OER
Euclidean Algorithm
Learners are introduced to the concept of a Greatest Common Divisor. They review the number systems. Students are told how the entire field of Number Theory primarily uses the integers. They are told the Fundamental Theorem of Algebra.
Curated OER
Got These Properties? (Commutative in Addition/Zero in Addition and Subtraction)
Second graders examine the commutative property of addition and the property of zero in addition and subtraction. They complete an asessment worksheet to gain practice reading and working number sentences horizontally and vertically.
Schoolcraft College
Trigonometry
This trigonometry textbook takes the learner from a basic understanding of angles and triangles through the use of polar coordinates on the complex plane. Written by a mathematician-engineer, examples and problems here are used to...
National Security Agency
Multiple Representations of Limits
After an introductory activity to demonstrate the theory of a limit, additional activities approach a limit from graphical, numerical, and algebraic methods. The activity looks at the multiple ways of understanding and evaluating a...
Curated OER
Number Properties-Know'em, Like'em, Use'em
Ninth graders explore mathematical properties through the use of an advertising jingle. They produce a commercial that is digitized and presented to the class. Students write a jingle that simplifies each property and helps classmates...
Curated OER
Mathematics: Domino Theory
Sixth graders use dominos and plastic chips to study common denominators and fractions. They describe how these operations are related to each other.
Curated OER
The Sum of Our Integer Intelligences
Students complete tasks. In this Seven Intelligences lesson, students complete a variety of activities that are all based on the seven different intelligences humans are supposed to possess based on Dr. Gardener's theory. They work in...
Curated OER
Relationship Between Addition and Subtraction
Students are taught how to add and subtract and use number sense to solve basic math problems. In this addition and subtraction lesson, students are being taught using theories from different philosophers in education. They are given a...
Curated OER
Union and Intersection of Sets
In this Algebra I/Algebra II instructional activity, students determine the intersection and union of sets and solve problems with Venn diagrams. The three page instructional activity contains a combination of seventeen multiple...
Curated OER
Close Your Math
Fourth graders complete a role playing activity to build understanding of number concepts. They use Algebraic Closure throughout six operations to better comprehend and review basic number theory. They utilize a worksheet imbedded in...
Curated OER
An Introduction to Public Key Cryptography
Students secure information online using cryptography. In this algebra lesson, students use RSA technology to encrypt information on the internet. They use modular reduction of natural numbers to understand prime number theory.
EngageNY
Polynomial, Rational, and Radical Relationships
This assessment pair goes way beyond simple graphing, factoring and solving polynomial equations, really forcing learners to investigate the math ideas behind the calculations. Short and to-the-point questions build on one another,...
Discovery Education
Weathering Cubes
Weathering is not necessarily a result of the weather. Scholars conduct an experiment to explore the effect of surface area and volume on the weathering process. They create their own sugar cube rocks using the same number of cubes—but...
Curated OER
Is That Your Final Answer?
This unit on integers includes a pre-test, a post-test, four spreadsheets, and links to an interactive web-site to support the learning of integer operations. Access to computers and the Internet are imperative to this unit. The lessons...
Curated OER
Orbital Bliss
Most young mathematicians are aware that the planets don’t orbit the sun in a circle but rather as an ellipse, but have never studied this interesting feature. This resource looks at the planetary orbits in more detail and helps learners...
Curated OER
Six Circles
Students develop the skills of problem solving through looking at situations mathematically. The lesson introduces students to the concepts of theorems and proofs as part of how one looks at mathematical problems.
Shodor Education Foundation
Introduction to the Concept of Probability
Acquaint mathematicians to the concept of probability with a discussion about the results of a game. Then have them play a dice, card, spinner, or coin game and recording the number of wins vs. the number of tries on an interactive web...
Curated OER
Number Properties - Know 'em, Like 'em, Use 'em
Ninth graders express mathematical properties through creation of advertising jingles.
Curated OER
The 400 Problem
Students develop the skills of problem solving and logical analysis. The conditions of when two subtraction sums are equal is examined to develop other skills like practicing arithmetic in context.
Curated OER
Fractions in the Kitchen
Seventh graders use the World Wide Web for research, identify fractions found in everyday life by finding a recipe that uses fractions.
Curated OER
Consecutive Numbers
Like all of the Problem Solving units, this one aims to introduce pupils to the underlying ideas of mathematics through a problem. The problem here requires a knowledge of arithmetic and the use of some algebra. In this unit we see how a...