Understanding the inverse or undoing relationship between multiplication of fractions and division of whole numbers:

Video on understanding multiplying fractions as division: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-fractions-topic/cc-5th-dividing-fractions/v/fractions-as-division

Video on understanding division as multiplying fractions: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-fractions-topic/cc-5th-dividing-fractions/v/creating-a-fraction-through-division-of-whole-numbers

Dividing a unit fraction by a whole number:

Thursday Video on dividing a unit fraction by a whole number, conceptual approach: http://www.showme.com/sh/?h=1fYZ1Fo

Video on dividing a unit fraction by a whole number, conceptual approach: http://www.showme.com/sh/?h=zsyw4lU

Practice dividing a unit fraction by a whole number with hints: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-fractions-topic/cc-5th-dividing-fractions/e/dividing_fractions_0.5

Dividing a whole number by a unit fraction:

Friday Video on dividing a whole number by a unit fraction, conceptual approach: http://www.showme.com/sh/?h=m89tbdY

Video on dividing a whole number by a unit fraction, conceptual approach: http://www.educreations.com/lesson/view/dividing-whole-numbers-by-unit-fractions-conceptua/16295829/?s=k0Qyj8&ref=app

Practice dividing whole numbers by a unit fraction with hints: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-fractions-topic/cc-5th-dividing-fractions/e/dividing_fractions

Video on understanding multiplying fractions as division: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-fractions-topic/cc-5th-dividing-fractions/v/fractions-as-division

Video on understanding division as multiplying fractions: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-fractions-topic/cc-5th-dividing-fractions/v/creating-a-fraction-through-division-of-whole-numbers

Dividing a unit fraction by a whole number:

Thursday Video on dividing a unit fraction by a whole number, conceptual approach: http://www.showme.com/sh/?h=1fYZ1Fo

Video on dividing a unit fraction by a whole number, conceptual approach: http://www.showme.com/sh/?h=zsyw4lU

Practice dividing a unit fraction by a whole number with hints: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-fractions-topic/cc-5th-dividing-fractions/e/dividing_fractions_0.5

Dividing a whole number by a unit fraction:

Friday Video on dividing a whole number by a unit fraction, conceptual approach: http://www.showme.com/sh/?h=m89tbdY

Video on dividing a whole number by a unit fraction, conceptual approach: http://www.educreations.com/lesson/view/dividing-whole-numbers-by-unit-fractions-conceptua/16295829/?s=k0Qyj8&ref=app

Practice dividing whole numbers by a unit fraction with hints: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-fractions-topic/cc-5th-dividing-fractions/e/dividing_fractions