Live Ustream Broadcast on August 20, 2008 at 7:00 p.m. EST.

Factors and GCF

My First Attempt at an Online Lesson (Keep Your Fingers Crossed)

This will be my first attempt to teach a lesson completely online. With anything new there are bound to be some problems.  I'm just impressed that this is possible.  So grab some paper and a pencil and get ready to learn. I will attempt to teach a lesson on factors and greatest common factors (GCF).

How does it all work?

Step 1: Watch the live tutorial (the video broadcast below) as I teach the concepts. If you have a question during the tutorial you can enter the chat room.

 (You can also print this pdf file  MathGuyLesson1FactorsandGCF.pdf) and work out the problems with me.)

Step 2: After watching the tutorial you can can complete the online quiz at the bottom of the page.  After you submit the quiz, I will email your results to you. 

Step 3: You can complete the additional questions.  I have included the answers.

 MathGuyLesson1additionalpractice.pdf

 MathGuyLesson1additionalanswers.pdf

Step 4: Vote for Next Week's Lesson (poll will close on August 25, 2008)

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Online Quiz

 

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Factors and Greatest Common Factor

Multiple Choice Identify the choice that best completes the statement or answers the question.
A B C D	1.	List all of the factors of 27. a. 3, 9 c. 1, 27 b. 1, 2, 3, 27 d. 1, 3, 9, 27
A B C D	2.	List all of the factors of 48. a. 2, 3, 4, 6, 8, 12, 16, 24 c. 1, 2, 2, 3, 4, 6, 8, 12, 16, 48 b. 1, 2, 3, 4, 6, 8, 12, 16, 24, 48 d. 1, 48
A B C D	3.	List all of the factors of 47. a. 1, 3, 15, 47 c. 1, 2, 23, 47 b. 1, 2, 3, 15, 23, 47 d. 1, 47
A B C D	4.	Find the GCF of 72, 24, and 84. a. 12 c. 24 b. 2 d. 13
A B C D	5.	Find the GCF of 81, 24, and 72. a. 6 c. 4 b. 3 d. 2
A B C D	6.	Allison works at a bakery. She must box 30 cinnamon twists, 36 Danish pastries, and 48 glazed donuts so that all of the boxes have the same number of each kind of pastry. What is the greatest number of boxes she can use? a. 12 c. 6 b. 2 d. 8
A B C D	7.	The sixth-grade class has 18 boys and 12 girls. The teacher is dividing them into groups to work on a special project. How many groups will there be if all of the groups must have the same number of boys and the same number of girls? a. 6 c. 8 b. 12 d. 2
A B C D	8.	List the factors to find the GCF of 27 and 45. a. 18 b. 135 c. 27 d. 9
A B C D	9.	A local reader’s club has a set of 12 hardback books, a set of 18 paperbacks, and a set of 36 magazines. Each set can be divided equally among the club members. What is the greatest possible number of club members? a. 3 members b. 6 members c. 4 members d. 8 members
A B C D	10.	Alejandro and Jean are distributing erasers and pencils to the art class. There are 35 erasers and 42 pencils. Each student receives the same number of pencils and the same number of erasers, and no supplies are left over. What is the greatest number of students in the class? a. 7 students b. 77 students c. 14 students d. 210 students