CK-12 Foundation
Ck 12: Arithmetic: Proportions to Find Base B
[Free Registration/Login may be required to access all resource tools.] In this lesson students use the cross products of proportions to find base b in percent problems. Students examine guided notes, review guided practice, watch...
TES Global
Tes: Cross Dressing in Shakespeare Gallery
[Free Registration/Login Required] This is a collection of photos of cross-dressed actors and actresses from the Royal Shakespeare Company productions of Shakespeare's plays.
Council for Economic Education
Econ Ed Link: Deceptive Advertising: Crossing the Line
Businesses use advertising to tell consumers about the goods and services they are selling. Businesses hope that their advertisements will convince people to buy their products. In this lesson, students examine the ground rules for...
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...
Khan Academy
Khan Academy: Probabilities in Genetics
Article reviews some probability basics then investigates how these calculations can be applied to genetics problems involving relatively large numbers of genes. Explores how the sum rule and the product rule can be used to solve these...
ClassFlow
Class Flow: Proportions
[Free Registration/Login Required] This lesson contains notes and examples for instructing how to solve proportions. Begins with relations to equivalent fractions, and then gets into solving algebraically using cross products. It...
Math Notes and Math Tests
Pre Calculus Notes: The Determinant of a Square Matrix [Pdf]
The resource investigates the determinant of a square matrix. Topics examined are computing determinants, Sarrus?s rule, and the cross product of two vectors. Class notes and examples are included.
CK-12 Foundation
Ck 12: Algebra: Rational Equations Using Proportions
[Free Registration/Login may be required to access all resource tools.] Use cross products and LCDs to solve rational equations.
Khan Academy
Khan Academy: The Expenditure Output, or Keynesian Cross, Model
Use a diagram to analyze the relationship between aggregate expenditure and economic output in the Keynesian model.
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.
TeachEngineering
Teach Engineering: May the Magnetic Force Be With You
This lesson begins with a demonstration of the deflection of an electron beam. Students then review their knowledge of the cross product and the right hand rule with sample problems. After which, students study the magnetic force on a...
TeachEngineering
Teach Engineering: Changing Fields
This lesson begins with an activity in which students induce EMF in a coil of wire using magnetic fields. Then, demonstrations on Eddy currents show how a magnetic field can slow magnets just as Eddy currents are used to slow large...
CK-12 Foundation
Ck 12: Algebra: Proportions With Variable in the Denominator
[Free Registration/Login may be required to access all resource tools.] Use cross products to solve proportions with a variable in the denominator
Other
Partnership for 21st Century Skills: Skills Map for the Arts [Pdf]
Arts education is part of the backbone of the 21st Century skills movement. The Partnership for 21st Century Skills had designed a map that provides examples of collaboration, communication, creativity, innovation, critical thinking,...
Other
Partnership for 21st Century Skills: Skills Map for the Arts [Pdf]
Arts education is part of the backbone of the 21st Century skills movement. The Partnership for 21st Century Skills had designed a map that provides examples of collaboration, communication, creativity, innovation, critical thinking,...
TeachEngineering
Teach Engineering: The Optimization of Slime
Using their knowledge of the phases of matter, the scientific method, and polymers, student teams work as if they are chemical engineers to optimize the formula for slime. Hired by the fictional company, Slime Productions, students are...
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.
Alabama Learning Exchange
Alex: Exploring Similar Figures Using Proportions
In this activity, students will explore the concept of similarity. Students will first simplify ratios, solve proportions using the cross product property, and use properties of proportions to solve real-world problems. Similar polygons...
Other
Nearpod: Proportions: Real World Examples
In this instructional activity, 7th graders will learn how to solve proportions using cross-products.
Other
Irac: Resistance Definition
Resistance may be defined as 'a heritable change in the sensitivity of a pest population that is reflected in the repeated failure of a product to achieve the expected level of control when used according to the label recommendation for...
Writing Fix
Writing Fix: The Wacky "I Will Not" Chalkboard
Inspired by Barry Lane's book 51 Wacky We-Search Reports, this cross-curricular lesson involves having students Learn how to summarize correctly with this cross-curricular writing assignment and prompt.
Writing Fix
Writing Fix: The Wacky "Box of Rocks" Assignment
Inspired by Barry Lane's book 51 Wacky We-Search Reports, in this cross-curricular lesson, students learn how to summarize properly.
ClassFlow
Class Flow: Solving Proportions
[Free Registration/Login Required] This lesson introduces the cross product method for solving proportions. It also connects the mathematical content to real-world applications.
Wolfram Research
Wolfram Math World: Vector
This site from Mathworld.com provides a detailed overview of vectors in algebra, and includes numerous formulas and examples.
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