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Khan Academy
Khan Academy: Randomized Algorithms: Random Primality Test (Warm Up)
Introduction to random primality tests & how they will work (warm up).
Khan Academy
Khan Academy: Randomized Algorithms: Fermat Primality Test
This video is part 10 of a series. It shows a quick outline of how & why it works.
Khan Academy
Khan Academy: Evaluating Function Expressions
In this video students learn to evaluate composite functions.
Loyola University Chicago
Math Flix: Prime Numbers: Seen in Graphics
This QuickTime movie provides an explanation of just what prime numbers are using graphics. As you watch and listen to the teacher and students interact it helps clarify the thinking behind applying this concept.
Sophia Learning
Sophia: Divisibility Rules: Lesson 10
This lesson introduces the rules of divisibility. It is 10 of 11 in the series titled "Divisibility Rules."
Sophia Learning
Sophia: Divisibility Rules: Lesson 2
This lesson introduces the rules of divisibility. It is 2 of 11 in the series titled "Divisibility Rules."
Sophia Learning
Sophia: Divisibility Rules: Lesson 7
This lesson introduces the rules of divisibility. It is 7 of 11 in the series titled "Divisibility Rules."
Sophia Learning
Sophia: Shape Combining: Lesson 3
In this lesson, students see that they can combine shapes to create a new, composite shape. It is 3 of 4 in the series titled "Shape Combining."
Sophia Learning
Sophia: Shape Dividing: Lesson 2
Students see that shapes can be divided in order to form new shapes. This lesson is 2 of 5 in the series titled "Shape Dividing."
Sophia Learning
Sophia: Building Composite Shapes: Lesson 1
This lesson demonstrates how to create composite shapes by combining other shapes. It is 1 of 10 in the series titled "Building Composite Shapes."