Multiply & Divide Fractions

NOTE: If you are going to PRINT the mini-lesson handouts, be sure to set your browser's FILE > PAGE SETUP for 0.5 inch margins and portrait orientation. Some cells have background color -- this color will only print if you turn on printing of background colors and images (TOOLS > INTERNET OPTIONS > ADVANCED TAB > PRINTING).
NOTE: If you would like to PRINT a single screen from the mini-movies, you can right-click on the screen (as the movie is playing or pause the movie). Select PRINT from the menu and the full movie window will print.
  1. Eratosthenes -- a YouTube video from J.B.MathFun

  2. Sieve of Eratosthenes -- a YouTube video from Video Math Tutor

  3. Help with Fractions Web Site (excellent resource)

  4. Operations with Fractions -- a lesson from Nutshell Math

  5. Improper Fractions and Mixed Numbers -- a lesson from Nutshell Math

  6. How to find a Prime Factorization (Part 1) -- a YouTube video from YourTeacher.com

  7. How to find a Prime Factorization (Part 2) -- a YouTube video from YourTeacher.com

  8. Here is a link to the National Library of Virtual Manipulatives so you can make a Factor Tree:
    http://nlvm.usu.edu/en/nav/frames_asid_202_g_2_t_1.html?from=category_g_2_t_1.html

  9. Here is a list of prime numbers: http://primes.utm.edu/lists/small/1000.txt

 Calculators -- use these to check your work: 

  1. Factors calculator

  2. Prime Factorization calculator 

  3. GCF calculator 

  4. LCM calculator 

  5. Divisibility Test calculator

  6. Fraction Calculator <-- Use this calculator to check your answers

Jolene's  Mini-movies:  

  • Factors of a number 34 seconds 

  • Prime or composite? 1 min 18 sec 

  • Divisible? 1 min 18 sec 

  • Prime factorization 1 min 40 sec 

  • Application using factors of a number 1 min 9 sec 

  • Greatest Common Factor (GCF) 2 min 37 sec 

  • Fraction represented by a shaded figure 34 seconds 

  • Application to write a fraction 55 seconds 

  • Write fractions as a division problem  35 seconds 

  • Change improper fraction to mixed number 29 seconds 

  • Change mixed number to improper fraction 21 seconds 

  • Comparing two fractions 1 min 35 sec 

  • Simplifying or reducing fractions 1 min 27 sec 

  • Multiply fractions 2 min 1 sec 

  • Multiply mixed numbers and fractions 1 min 39 sec 

  • Estimate products of mixed numbers 1 min 37 sec  

  • Multiply denominate numbers (rates) 1 min 8 sec 

  • "Of" means multiply 2 min 16 sec 

  • Area of a triangle 2 min 14 sec 

  • Majority and two-third vote  2 min 28 sec 

  • Find the reciprocal  1 min 41 sec 

  • Dividing fractions 1 min 5 sec 

  • Dividing mixed numbers 1 min 55 sec 

  • Unit pricing 2 min 1 sec 

  • Application: Division of fractions 2 min 36 sec 

  • Application: Division of fractions 58 seconds 

  • Convert units (using unit analysis)  5 min 49 sec 

  • Unit analysis 2 min 13 sec 

 What are the Mini-movies?

What are the mini-movies? The mini-movies are marked with a icon. They are are flash video files that contain a teaching presentation with an audio track. These were recorded in my office (not lecture) so they are short, but very dense (crammed full of information). Movie controls are available so you can replay, pause, and skip sections.


2012 Jolene M. Morris - All rights reserved
Last updated on  Saturday, August 11, 2012