Interactive Mathematics
Interactive Mathematics: Basic Operations With Complex Numbers
Add, subtract, multiply and divide complex numbers using these easy-to-follow examples.
Khan Academy
Khan Academy: Multiply Complex Numbers (Basic)
Multiply complex numbers by single terms that are either real or pure imaginary.
Other
Chili Math: Basic Number Properties
Overview of the four basic number properties with examples.
Chem Tutor
Chem Tutor: Atomic Structure: Atomic Weights and Atomic Numbers
This lesson explains many basic concepts of atomic structure. It starts with atomic mass and number and then works up to more sophisticated information on electron configuration and how each element fits into the Periodic Table.
Other
Fascinating Triangular Numbers
Patterns of numbers don't come along every day, and so when they do, they need to be bragged about! The basic definition of triangular numbers begins this site which also lists many of the properties of these numbers, highlights the...
NumberNut
Number Nut: Addition: Adding Two Digit Numbers
Explains how to add two-digit numbers by focusing on each column of digits as you add, rather than the entire numbers.
NumberNut
Number Nut: Addition: 2 Digit Numbers
Learn how to add double-digit numbers in this lesson complete with examples, rules, and vocabulary.
AAA Math
Aaa Math: Long Division: Dividing a 4 Digit by 2 Digit Numbers
This site explains how to divide whole numbers, then offers problems and games to practice this skill.
University of Texas at Austin
Mathematics Teks Toolkit: Divide and Conquer
Explore how to divide fractions through multiple activities and the division of whole numbers.
TeachEngineering
Teach Engineering: Navigating by the Numbers
For this lesson, students will learn that math is important in navigation and engineering. Ancient land and sea navigators started with the most basic of navigation equations (Speed x Time = Distance). Today, navigational satellites use...
American Chemical Society
Middle School Chemistry: Periodic Table
Students explore the periodic table and learn the basic information given for elements: the name, symbol, atomic number, and atomic mass for each element.
Yale University
Yale New Haven Teachers Institute: Heredity: Your Connection to the Past
An indepth introduction to genetics as a whole with sample lessons, vocabulary, and bibliography. From the Yale-New Haven Teachers Institute.
Other
Nz Maths Problem Solving Lesson Plans: Level 2
NZMaths is a New Zealand teacher resource that provides lesson plans for students in algebra, geometry, measurement, numbers, statistics, logic and reasoning.
Other
Nz Maths: Problem Solving Lesson Plans: Level 3 Problems
This New Zealand Problems website is an excellent resource for lesson plans in problem-solving. They are organized into the following categories: algebra, geometry, measurement, numbers, statistics, and logic and reasoning.
Other
Nz Maths Problem Solving Lesson Plans: Level 5
Teachers, this New Zealand Problem Solving website is an outstanding resource for lesson plans. They are organized into the following categories: algebra, geometry, measurement, numbers, statistics, and logic and reasoning.
Other
Nz Maths Problem Solving Lesson Plans: Level 6
Teachers, this New Zealand Problem Solving website is an outstanding resource for lesson plans. They are organized into the following categories: Algebra, Geometry, Measurement, Numbers, Statistics, and Logic and Reasoning.
Other
Quiz Tree Esl for Spanish Speakers
Fantastic quizzes for Spanish speakers. All quizzes feature colorful interface and humorous feedback noises that make learning more enjoyable. Some of the topics are basic phrases, colors, common expressions, describing people,...
Texas Instruments
Texas Instruments: Numb3 Rs: "Uncertainty Principal" Checksum
This lesson plan introduced students to algorithms in the context of bank routing numbers (printed on checks). Students learn that the final digit in the routing number serves a specific purpose, and find such digits so that the routing...
Arcademics
Arcademics: Canoe Puppies
Canoe Puppies is a multiplayer math game that allows students from anywhere in the world to race against each other while practicing adding two-digit numbers!
Math Slice
Math Slice: Picture Fraction
This resource covers basic fractions and students can choose between a fractional whole up to eight or up to sixteen pieces. Students are given a pie chart and they have to determine what fraction of the chart is shaded. There are ten...
Alabama Learning Exchange
Alex: "Fantastic Fractions"
The students will use sugar-free Gummy bears to identify fractional parts of the whole. The students will create a graph using the information obtain.This lesson plan was created as a result of the Girls Engaged in Math and Science...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Multiplication Table
This multiplication table has multiplication facts through 9 X 9 and also lets students practice them.
Better Lesson
Better Lesson: Cheerful Shoppers
Second graders love to shop! Students will use their own shopping list to compose a word problem using addition and subtraction with and without regrouping, in order to help them better understand how to problem solve.
Other
Allmath.com: Magic Squares Game
Magic squares have been a fascinating topic in mathematics for centuries. They are formed by filling in all the squares with the numbers starting from one so that the sum of all rows, columns, and diagonals is the same. Instructions are...