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Harvesting the Fields
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This is a challenging task, suitable for extended work, and reaching into a deep understanding of units. The task requires students to exhibit MP1, Make sense of problems and persevere in solving them. An algebraic solution is possible but complicated; a numerical solution is both simpler and more sophisticated, requiring skilled use of units and quantitative reasoning. Thus the task aligns with either A-CED.1 or N-Q.1, depending on the approach.

Subject:
Algebra
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
05/01/2012
Herbal Products Business I
Conditional Remix & Share Permitted
CC BY-NC-SA
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This math assignment was designed for students in the U.S. Virgin Islands, but can be modified for students in any locale.  Setting assignments within a student's locale strengthens students' knowledge of their locale and makes for a deeper, more meaningful lesson.

Subject:
Algebra
Mathematics
Material Type:
Homework/Assignment
Author:
Andre Douglas
Date Added:
03/29/2023
Herbal Products Business II
Conditional Remix & Share Permitted
CC BY-NC-SA
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This math assignment was designed for students in the U.S. Virgin Islands, but can be modified for students in any locale.  Setting assignments within a student's locale strengthens students' knowledge of their locale and makes for a deeper, more meaningful lesson.

Subject:
Algebra
Mathematics
Material Type:
Homework/Assignment
Author:
Andre Douglas
Date Added:
04/24/2023
Herbal Products Business III
Conditional Remix & Share Permitted
CC BY-NC-SA
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This math assignment was designed for students in the U.S. Virgin Islands, but can be modified for students in any locale.  Setting assignments within a student's locale strengthens students' knowledge of their locale and makes for a deeper, more meaningful lesson.

Subject:
Algebra
Mathematics
Material Type:
Homework/Assignment
Author:
Andre Douglas
Date Added:
04/26/2023
How does the solution change?
Unrestricted Use
CC BY
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The purpose of this task is to continue a crucial strand of algebraic reasoning begun at the middle school level (e.g, 6.EE.5). By asking students to reason about solutions without explicily solving them, we get at the heart of understanding what an equation is and what it means for a number to be a solution to an equation. The equations are intentionally very simple; the point of the task is not to test technique in solving equations, but to encourage students to reason about them.

Subject:
Algebra
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
05/01/2012
Ice Cream
Unrestricted Use
CC BY
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This task illustrates the process of rearranging the terms of an expression to reveal different aspects about the quantity it represents, precisely the language being used in standard A-SSE.B.3.

Subject:
Algebra
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
05/01/2012
Increasing or Decreasing? Variation 1
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CC BY
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Students are asked to consider the expression that arises in physics as the combined resistance of two resistors in parallel. However, the context is not explicitly considered here. The task is good general preparation for problems more specifically aligned to either A-SSE.1 or A-SSE.2.

Subject:
Algebra
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
05/01/2012
Intro to matrix inverses
Conditional Remix & Share Permitted
CC BY-NC-SA
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We've learned about matrix addition, matrix subtraction, matrix multiplication. So you might be wondering, is there the equivalent of matrix division? And before we get into that, let me introduce some concepts to you. And then we'll see that there is something that maybe isn't exactly division, but it's analogous to it.

Subject:
Algebra
Mathematics
Material Type:
Lesson
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Salman Khan
Date Added:
06/15/2021
Inverse Square Law
Read the Fine Print
Educational Use
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This animation from KET's distance learning physics course demonstrates the mathematical formula for a scientific law as it applies to light.

Subject:
Algebra
Chemistry
Functions
Mathematics
Physical Science
Physics
Material Type:
Interactive
Reading
Provider:
PBS LearningMedia
Provider Set:
Teachers' Domain
Author:
KET
The William and Flora Hewlett Foundation
Date Added:
08/25/2008
Is matrix multiplication commutative?
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CC BY-NC-SA
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Sal checks whether the commutative property applies for matrix multiplication. In other words, he checks whether for any two matrices A and B, A*B=B*A (the answer is NO, by the way). Created by Sal Khan.

Subject:
Algebra
Mathematics
Material Type:
Lesson
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Salman Khan
Date Added:
06/15/2021
Kitchen Floor Tiles
Unrestricted Use
CC BY
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The purpose of this task is to give students practice in reading, analyzing, and constructing algebraic expressions, attending to the relationship between the form of an expression and the context from which it arises. The context here is intentionally thin; the point is not to provide a practical application to kitchen floors, but to give a framework that imbues the expressions with an external meaning.

Subject:
Algebra
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
05/01/2012
Like Items
Read the Fine Print
Educational Use
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After their carts collide in a hardware store, two teachers discover that they both bought the same items in different quantities. With limited information, this segment demonstrates how to use an equation to determine the cost of each item.

Subject:
Algebra
Mathematics
Material Type:
Lesson
Provider:
PBS LearningMedia
Provider Set:
PBS Learning Media Common Core Collection
Author:
New York Network
WNET
Date Added:
05/13/2010
Linear Algebra: A Projection onto a Subspace is a Linear Transformation
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CC BY-NC-SA
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This 16-minute video lesson shows that a projection onto a subspace is a linear transformation. [Linear Algebra playlist: Lesson 110 of 143]

Subject:
Algebra
Mathematics
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Salman Khan
Date Added:
02/20/2011