CK-12 Foundation
Ck 12: Arithmetic: Proportions Using Cross Products
[Free Registration/Login may be required to access all resource tools.] In this lesson students identify proportions by cross multiplying or simplifying ratios. Students examine guided notes, review guided practice, watch instructional...
Texas Education Agency
Texas Gateway: Chapter 11: The Expenditure Output or Keynesian Cross Model
By the end of this section, you will be able to: Explain what the expenditure-output model/Keynesian cross diagram shows and what the equilibrium point on the diagram represents. Analyze the consumption function, investment function,...
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Cross Products
Find a quick, concise explanation of Cross Products. An example is given and clearly explained.
Shmoop University
Shmoop: Fractions & Decimals: Multiplying Fractions and Mixed Numbers
The mathematics resource explores how to multiply fractions and mixed numbers. Students examine the topics through class notes and examples. Practice problems with solutions are available to check for comprehension of the concepts.
Wyzant
Wyzant: Proportions Basics Worksheet
An interactive quiz from WyzAnt of 20 proportions are presented for the students to solve and then check their answers. All can be computed with simple cross-multiplying.
Calculator Soup
Calculator Soup: Fractions Solve for Unknown X
Solve for an unknown value x with this fractions calculator. Find the missing fraction variable in the proportion using cross multiplication to calculate the unknown variable x. Solve the proportion between 2 fractions and calculate the...
Other
Chili Math: Writing and Identifying Equivalent Fractions
Fractions that are the same in value but look different are known as equivalent fractions. As long as you multiply or divide the top and bottom of a fraction by the same nonzero whole number, the resulting fraction will be equivalent to...
University of Cambridge
University of Cambridge: Nrich: Game Criss Cross Quiz
Use this online game to improve your subtraction or addition skills while you play on a coordinate plane gameboard. Gain skills in two areas at the same time! This game can also be altered to practice multiplication facts. There is a...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Solving Rational Equations
Twenty-six problems cover the topic of solving a variety of rational equations. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to...
CK-12 Foundation
Ck 12: Geometry: Indirect Measurement
[Free Registration/Login may be required to access all resource tools.] This concept teaches students to use similar triangles and proportions to find measurements indirectly. Students examine guided notes, review guided practice, watch...
CK-12 Foundation
Ck 12: Geometry: Proportion Properties
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to set up and solve proportions.
CK-12 Foundation
Ck 12: Arithmetic: Products of Two Fractions
[Free Registration/Login may be required to access all resource tools.] In this lesson students find the product of two fractions. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...
Physics Aviary
Physics Aviary: Vector Math
This activity checks that you are able to add and subtract vectors, calculate the dot and cross product of vectors, and multiply or divide vectors by scalars.
Wolfram Research
Wolfram Math World: Inner Product
This site contains links to four kinds of inner products: Dot Product, Hermitian Inner Product, Interior Product, L2-Inner Product.
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