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In this animated activity, learners read the definition of a parallelogram and then find the perimeter and area of parallelograms in practice problems.
Fundamental Laws of Algebra
By Allen Reed, Douglas Jensen
Learners review the fundamental laws of algebra including the commutative law of addition, the commutative law of multiplication, the associative law of addition, the associative law of multiplication, and the distributive law. Examples are given.
In this animated activity, learners read about the properties of a square and its components. They then work practice problems to find the perimeter and area of squares.
Solving Systems of Linear Equations Using the Addition or Subtraction Method
In a series of practice problems, learners use the addition or subtraction method to solve systems of linear equations, also called "simultaneous linear equations."
Strength of Materials: The Centroid of a Circle
By Steve Whitmoyer
In this animated and interactive object, learners calculate the area and centroid of a circle.
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