Wolfram Research
Wolfram Math World: Determinant
This site has a good definition and examples of determinants, the site begins by explaining what the value of a determinant is, then gives an example of the determinant of a two by two matrix, a generic formula for finding the...
PBS
Pbs Kids Afterschool Adventure!: Operation: Numbers 1 10 Activity Plan
In this week's Afterschool Adventure, children will explore simple math activities using the numbers one through ten. Children will represent numbers in different ways, such as drawing quantities; writing numerals; and using number...
Thomas Jefferson National Accelerator Facility
Jefferson Lab: Order of Operations
Students will be given a set of numbers and will determine the order in which to add or subtract them to end with the correct solution.
Khan Academy
Khan Academy: Precalculus: Matrix Row Operations
Determine the matrix that is the result of performing a specific row operation on a given matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Determinant of a 2x2 Matrix
Find the determinant of a given 2x2 matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Mangahigh
Mangahigh: Number: Choose the Correct Operation
Determine the correct operation to complete the expression.
Other
High School Operations Research: Torn Shirts Inc.: Telephone Orders
A group of high school students need help determining how they will make the most profit selling T-shirts. They use data to analyze a business problem and apply probability concepts.
E-learning for Kids
E Learning for Kids: Math: Hamburger Restaurant: Operations With Money
On this interactive site students learn to round numbers to the nearest ten thousand, determine the place value of any digit, and use ordinal numbers.
CK-12 Foundation
Ck 12: Elem Math: Filling in the Missing or Sign Numbers to 1000
[Free Registration/Login may be required to access all resource tools.] The video works through a 3-digit addition problem to determine if the correct operation for the number sentence is addition or subtraction. The video is followed by...
CK-12 Foundation
Ck 12: Elem Math: Mixed Operations Selecting the Incorrect Sentence
[Free Registration/Login may be required to access all resource tools.] The video shows how to add and subtract three digit numbers with two operations in a number sentence to determine which number sentence does not match the correct...
CK-12 Foundation
Ck 12: Elem Math: Mixed Operations Selecting the Incorrect Sentence
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a series of multi-operation problems with addition and subtraction of three-digit numbers to determine which does not match the...
CK-12 Foundation
Ck 12: Elem Math: Mixed Operations Subtraction and Addition Ii Word Problems
[Free Registration/Login may be required to access all resource tools.] a The video shows how to work backwards using addition and subtraction to determine the start value of a given situation. The video is followed by a series of...
CK-12 Foundation
Ck 12: Elem Math: Mixed Operations Selecting the Correct Sentence
[Free Registration/Login may be required to access all resource tools.] The video shows how to add and subtract three digit numbers to determine which number sentence matches the correct solution. The video is followed by a series of...
CK-12 Foundation
Ck 12: Elem Math: Add and Subtract to 100 Mixed Operations and Word Problems
[Free Registration/Login may be required to access all resource tools.] This is a set of practice problems where students solve addition and subtraction problems in order to determine missing numbers to keep the equation balanced. When...
AAA Math
Aaa Math: Determining Percentage
This lesson explains how to determine the percent of one number compared to another. Includes practice and games to practice this skill.
CK-12 Foundation
Ck 12: Elem Math: Multi Operation and Multi Step Metric Applications
[Free Registration/Login may be required to access all resource tools.] A practice quiz where students solve word problems involving length where one length is missing.
CK-12 Foundation
Ck 12: Elem Math: Determining Elapsed Time With Fractions
[Free Registration/Login may be required to access all resource tools.] For this learning module, students solve multi-step word problems involving time written in 24-hour format as well as fractions. Includes video demonstrating a...
CK-12 Foundation
Ck 12: Elem Math: Determining Elapsed Time With Speed
[Free Registration/Login may be required to access all resource tools.] For this learning module, students solve word problems where they must calculate elapsed time given he speed of an event or activity. Includes video demonstrating a...
CK-12 Foundation
Ck 12: Elem Math: Determining Task Length
[Free Registration/Login may be required to access all resource tools.] For this learning module, students solve word problems where they must calculate the length of time a task takes. Includes video demonstrating a sample problem and a...
CK-12 Foundation
Ck 12: Elem Math: Determining the Missing Factor in a Decimal Equality
[Free Registration/Login may be required to access all resource tools.] For this learning module, students are presented with equations involving multiplication and division and must find the missing terms. Includes video demonstrating a...
Thomas Jefferson National Accelerator Facility
Jefferson Lab: Speed Math Multiply and Divide
Students will be given numbers and the solution, they will need to determine which numbers were multiplied and/or divided to complete the equation.
Other
Metal: Matrices [Pdf]
The resource is a lesson guide that teaches the basic mathematical concepts needed for teaching economics and financial economics. Topics include matrix transposition, matrix inversion, and operations with matrices. Applications of Excel...
Other
Newmont Mining Corporation: The Mining Process
This site describes the process of mining for gold. Covers exploration, determining the mining method, analyzing the impact, building and operating the mine, ore processing, mine closure, and the reclamation process.
Shodor Education Foundation
Shodor Interactivate: Mixtures
This activity will help students develop their understanding of percents and proportional reasoning by solving mixture problems. Working with two piles of circles the student determines the number in each pile that will be colored. In...