Other
Dan's Math: Basic Skills Topics
College professor Dan Bach offers a review of various basic topics in arithmetic, pre-algebra, and algebra. Order of operations, exponents, square roots, variables, and combining terms are just a few of the many topics covered.
Shodor Education Foundation
Shodor Interactivate: Equation Solver
This activity helps with understanding how to balance an algebraic equation. You input the term and the operation. The activity uses that term, operates on both sides of the equation, then displays the resulting equation.
Other
Cambridge University: Color Perception Tutorial
This helpful tutorial on color perception is divided into sections including our eyes and vision, additive and subtractive color mixing, hue and saturation, and color properties.
Khan Academy
Khan Academy: Math Patterns 1
Identify arithmetic patterns (including ones in the addition or multiplication tables), and explain them using properties of operations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Simon Fraser University
Chem1 Virtual Textbook: Kinetic Molecular Model
The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals with the basic components of the Kinetic-Molecular Theory in addition to...
Math Medics
S.o.s. Math: Hyperbolic Functions
This math lesson gives formulas for the hyperbolic trigonometric functions, a very most important property of their version of the Pythagorean Theorem, and it's verification, and many helpful visual aides.
NOAA
Noaa: Crabeater Seals
This complete site offers several really cool facts about the crabeater seal. In addition, a link takes you to more information about this seal such as where do they live, what do they eat, how long do they live and more.
Duke University
Duke University: Web Feats Ii: Altitude Theorem for Equilateral Triangles
This resource provides information about the altitude theorem for equilateral triangles, in addition to links on related topics. Requires Java.
Illustrative Mathematics
Illustrative Mathematics: G Mg Solar Eclipse
In this task, students investigate why total solar eclipses are rare. They will learn that, in addition to requiring the positioning of the Sun, Moon, and Earth, the Moon can only completely block out the Sun when it is closest to the...
Better Lesson
Better Lesson: Math Centers Review Previous Skills
Students will be able to independently practice graphing, teen numbers, and addition.
Alabama Learning Exchange
Alex: Camp Add 'Em Up
When you go to camp, you expect to have a great time and learn a lot. The Camp Add 'Em Up lesson plan series is designed to guide a first grade student through development of addition and subtraction strategies through patterning. This...
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Turn Around Dominoes [Pdf]
Write addition number sentences using the commutative property.
CK-12 Foundation
Ck 12: Arithmetic: Decimals
[Free Registration/Login may be required to access all resource tools.] Use number properties in decimal operations
Illustrative Mathematics
Illustrative Mathematics: Make 9
Students will make 9 in as many ways as they can by adding two numbers between 0 and 9. This is a good introduction to the commutative property.
Illustrative Mathematics
Illustrative Mathematics: Counting Dots in Arrays
This task aims to show learners that there is often more than one way to represent a quantity. This lesson also lays a foundation for students to understand the commutative property of multiplication.
CK-12 Foundation
Ck 12: Algebra: One Step Equations and Inverse Operations
[Free Registration/Login may be required to access all resource tools.] In this lesson students learn how to solve one-step equations. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...
Illustrative Mathematics
Illustrative Mathematics: Fact Families
As a whole class, the teacher presents students with 3 numbers on cards, such as 5, 8, and 3. The teacher asks the students to find all the ways the numbers can be put together in addition or subtraction sentences. This lesson includes...
Illustrative Mathematics
Illustrative Mathematics: 5.md,oa You Can Multiply Three Numbers in Any Order
The purpose of this task is for students to use the volume of a rectangular prism to see why you can multiply three numbers in any order you want and still get the same result. Aligns with 5.OA.A and 5.MD.C.5.
Math Medics
S.o.s. Math: Order of Operations
This lesson contains four rules on order of operations and several examples of each. It also allows you to work out practice problems.
Science Struck
Science Struck: Adding Exponents
Explains how to add exponents as well as other aspects of exponents including positive and negative exponents, rational exponents, zero exponents, power of power, and division of exponents. Includes practice problems with answers provided.
Integrated Publishing
Integrated Publishing: Inequalities
Read an explanation of both the addition and multiplication properties of inequalities. Examples and practice problems (with their solutions) are also provided.
Amethyst Galleries
Native Sulfur
This informative site explains the reason behind the odor of sulfur. In addition, the physical characteristics of sulfur are listed and explained.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Add and Subtract Polynomials
Find a quick, concise explanation of how to add and subtract polynomials. Step by step example is included to help you understand how to use the distributive property to find the sum or difference.
California Institute of Technology
Spitzer Science Center: Ring of Stellar Death
The Ring of Stellar Death captured in this space telescope image features a dying star expelling what appears to be clumpy rings of material, but turns out to be part of a planetary nebula. In addition, a detailed textual overview...