Dividing Whole Numbers, Part 1: Division's Relationship to Multiplication and Subtraction, Part One
This clip explains that division is a shortcut for repeated subtraction, and is also the opposite of multiplication.
Dividing Whole Numbers, Part 1: Division's Relationship to Multiplication and Subtraction, Part Two
This clip continues the previous discussion about viewing division as a shortcut for repeated subtraction or as the opposite of multiplication.
Dividing Whole Numbers, Part 1: Few Division Problems, A
This clip offers two practical division problems which can be solved using techniques taught previously, including repeated subtraction and multiplication.
Dividing Whole Numbers, Part 1: Remainders
This clip explains when remainders are used, noting that they are unnecessary once fractions are learned.
Dividing Whole Numbers, Part 1: Rules of Division
This clip explains 4 rules of division, including never dividing by zero; zero divided by a non-zero number equals zero; any number divided by one equals that number; and, any non-zero number divided by itself equals 1.
Dividing Whole Numbers, Part 1: Summary: Dividing Whole Numbers, Part One
This clip summarizes the key points in Part 1 of Dividing Whole Numbers, including the introduction of the terms dividend, divisor and quotient. It then explains that division was introduced in two different ways: as a s..
Dividing Whole Numbers, Part 2: Comparing Methods of Division
This clip explains that dividing can sometimes be done more quickly for those comfortable with guessing the partial quotient rather than figuring it out. On the other hand, the method known as "long division" offers anot..
Dividing Whole Numbers, Part 2: Division Shortcut, A
This clip explains that, " if you are dividing by a number less than 10, you may have learned to do all the work in your head." It then demonstrates the steps that one would go through in dividing 208 by 8.
Dividing Whole Numbers, Part 2: Division and Partial Quotients
This clip revisits the notion that there are two ways to look at division: as the opposite of multiplication or as repeated subtraction. The clip then introduces partial quotients and explains how they can be used in the..
Dividing Whole Numbers, Part 2: Partial Quotients and Multiples of Ten
This clip explains how understanding and learning powers of ten and learning multiples of ten can reduce the number of partial quotients needed to solve a division problem.