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Mathematics -- Addition or subtraction
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Solving Systems of Linear Equations Using the Addition or Subtraction Method
This learning object from Wisc-Online covers solving systems of linear equations using the addition or subtraction method. The unit looks at the common solution to simultaneous linear equations (also referred to as...
Simplifying Algebraic Expressions: Addition and Subtraction
This learning object from Wisc-Online covers simplifying algebraic expressions using addition and subtraction. The unit's activities include defining the terminology associated with algebraic expressions, using the...
Fundamental Laws of Algebra
This learning object from Wisc-Online covers the fundamental laws of algebra. The interactive activity includes slides which cover the following topics: the commutative, associative and distributive laws as applied to...
Abacus: The Art of Calculating with Beads
The abacus has been around for several thousand years, and it is an efficient and interesting counting machine. The standard abacus can be used to perform addition, subtraction, division, and multiplication, along with...
Super Computation: An AHA Moment
In this interactive activity from Wisc-Online, the mathemagician will "magically" add numbers written on a virtual chalkboard. Students are challenged to figure out the mathematical "trick" that is being used in the...
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