Better Lesson
Better Lesson: More Than Two Numbers
The big idea of this lesson is that three (or more) numbers can be grouped together and added. The order of this grouping doesn't matter.
Oswego City School District
Regents Exam Prep Center: Multiply and Divide Complex Numbers
This tutorial shows students how to multiply and divide complex numbers and includes the topic of conjugates. Includes link to a graphing calculator tutorial.
Math Drills
Math Drills: St. Patrick's Day Math Worksheets
Download these free worksheets to sharpen your math skills. These St. Patrick's Day math worksheets focus on topics such as patterning, comparing numbers, counting, word problems, addition, multiplication, and mixed operations.
Other
Quick Math: Scientific Notation
In this section, we will introduce another symbol for a fraction of the form and then we will use this symbol to write certain numbers in simpler form.
Math Drills
Math Drills: Order of Operations Worksheets
Order of operations worksheets can be downloaded and printed for free. Sheets focus on the order of operations with whole numbers, integers, fractions, and decimals.
Clark University
Clark University: Complex Numbers: The Complex Plane
A number of different ways to approach complex numbers and operations with them.
Illustrative Mathematics
Illustrative Mathematics: A sse.a.2 & N cn.a: Computations With Complex Numbers
This task requires learners to rewrite mathematical expressions involving complex numbers. Aligns with A-SSE.A.2 and N-CN.A.
Khan Academy
Khan Academy: Multiply Complex Numbers (Basic)
Multiply complex numbers by single terms that are either real or imaginary. Students receive immediate feedback and have the opportunity to try questions repeatedly or receive hints.
Interactive Mathematics
Interactive Mathematics: Products and Quotients of Complex Numbers
Complex numbers are multiplied and divided using polar and exponential forms. Several examples are provided to demonstrate the process. Includes practice questions.
PBS
Pbs: Solving Linear Inequalities With Negative Numbers
Solve an inequality that has negative numbers and a variable. This video focuses on using inverse operations to solve for a variable and the importance of flipping the inequality when multiplying or dividing by a negative number.
Better Lesson
Better Lesson: The Neighbors of Doubles
The big idea of this lesson is that students can solve for near doubles by thinking of the related doubles fact.
Homeschool Math
Homeschool Math: Multiplying Decimals by Whole Numbers
This is a complete lesson with instruction and varied exercises about how to multiply a whole number by a decimal.
Shodor Education Foundation
Shodor Interactivate: Arithmetic Four
Students try to connect four game pieces in a row by answering whole number and integer problems. They can choose the difficulty level as well as addition, subtraction, multiplication, or division.
Other
Chili Math: Writing Algebraic Expressions
Overview of how to write algebraic expressions with step-by-step examples.
Calculator Soup
Calculator Soup: Math Equation Solver
Solve math problems using order of operations like PEMDAS, BEDMAS and BODMAS. This calculator solves math equations that add, subtract, multiply and divide positive and negative numbers and exponential numbers. You can also include...
Alabama Learning Exchange
Alex: Wheels All Around
Students will use skip counting to see how many wheels visit the school during specified times in one day. This lesson plan was created as a result of the Girls Engaged in Math and Science University, GEMS-U Project.
AAA Math
Aaa Math: Adding Three Digit Numbers
Read through this explanation of how to add three digit numbers. Use the online game to practice this skill. The game will keep running totals of your correct and incorrect answers. It will also show you a percent score of the correct...
Boston University
Fractal Geometry of the Mandelbrot Set Ii
This web site addresses counting and adding in fractal operations, as well as the role of the Fibonacci sequence in fractal geometry.
University of Virginia
University of Virginia: Counting in Babylon
A discussion of the number system used by the ancient Babylonians. Examples are provided for various mathematical operations based on the number 60 (our number system is based on the number ten).
Better Lesson
Better Lesson: Patterns in Nature
Are there patterns in nature that can be described by numbers? That is what we will find out here.
Lizard Point Quizzes
Lizard Point: Subtraction Practice
At this site from Lizard Point Consulting, you can practice several different levels of difficulty of subtraction problems that use 1-digit numbers all the way up to 3-digit number subtraction problems that require regrouping. You can...
Calculator Soup
Calculator Soup: Fractions Calculator
Use this fraction calculator for adding, subtracting, multiplying and dividing fractions. Answers are fractions in lowest terms or mixed numbers in reduced form.
Better Lesson
Better Lesson: Associative Property With Manipulatives
Children need to understand why the mathematical properties work and how they are applied. In this instructional activity, we explore modeling and "proving" the associative property. In this instructional activity, we explore modeling...