Purple Math
Purplemath: Lcm & Gcf
Purplemath shows an easy and orderly way to determine the GCF and LCM of any two numbers. Even large numbers won't be a challenge with this method.
Better Lesson
Better Lesson: Greatest Common Factor & Least Common Multiple
Clearly understand the difference between factors and multiples builds a foundation for applications and problem solving using GCF and LCM.
Better Lesson
Better Lesson: Review & Assessment 6.ns.a.1 and 6.ns.b.4
This lesson plan brings all the pieces together to have students show the how's and why's by using GCF,LCM, Distributive property and dividing fractions.
Shmoop University
Shmoop: Basic Operations: Lcm & Gcf
Students learn about the least common multiple and the greatest common factor. The resource consists of notes, step-by-step examples, and practice problems with solutions.
Khan Academy
Khan Academy: Gcf & Lcm Word Problems
Solve word problems where you either need to find the GCF or LCM. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.