Title: Greatest Common Factor

Grade Level: Sixth Grade

Subject: Math

Duration: 1 hour - 1 hour 15 min

DOK Level: Level One

SAMR Level: Substitution

Indiana Standard: 6.NS.7: Find the greatest common factor of two whole numbers less than or equal to 100 and the least common multiple of two whole numbers less than or equal to 12.

Objective: Learn and practice the concepts of greatest common factor

Procedure:

1. Label your spiral notebook page “Greatest Common Factor”.

2. Copy the two definitions below.

Greatest Common Factor (GCF)- the largest factor that is shared by two or more numbers

Factor- numbers we can multiply together to get another number.

             Example: 2 and 3 are factors  of 6, because 2 × 3 = 6. A number can have MANY    

             factors !

3. Watch the two teaching videos below. You do not need to take notes, but you if you would like to, you may. Label the section in your notes as “Video Notes”.

* http://www.showme.com/sh/?h=kXWVBxY (8 minutes)

*https://www.khanacademy.org/math/pre-algebra/factors-multiples/greatest_common_divisor/v/greatest-common-divisor (6 minutes). When the video is finished, click on the left hand side of the screen where it says “Practice Greatest Common Factor”. Complete at least 5 of these questions in your spiral notebook showing your work. Check your work online and show your checking in your spiral notebook. If you miss a problem, look at their work and make your corrections.

4. Complete this online 10 question quiz: http://www.thatquiz.org/tq-r/?-j2-l5-p0

Once your quiz is scored, make sure you look over the questions you missed and their correct answers. (You do not need to write anything in your notebook except your final score!)

5. You may spend a total of 15 minutes on the two online games below.

*http://www.math4childrenplus.com/greatest-common-factor-2-memory-games/

*http://www.sheppardsoftware.com/mathgames/fractions/GreatestCommonFactor.htm

(You do not need to write anything in your notebook.)

6. Work 10 free IXL problems from the standards listed below. Label this as “IXL Work” in your notebook and show your work.

E.7 Greatest Common Factor                                        

E.9 GCF and LCM word problems