Measurement and Unit Conversion: Unit Conversion Factors of Time: Hours, Minutes and Seconds
This clip presents unit conversion problems involving sleep that can be solved by utilizing unit equivalences for seconds to minutes and minutes to hours, and then either multiplying or dividing.
Measurement and Unit Conversion: Unit Conversion Factors of Time: Days and Hours
This clip introduces unit conversion factors of time involving days and hours. "It is not important to memorize these factors," the clip explains. "As long as you already know the equivalences, you can figure out the unit conversion factors." The cl...
Dividing Decimal Fractions: Dividing Decimals: Four Different Outcomes
This clip presents four different outcomes that may occur when dividing decimals: The first possibility is that the division comes out even "just as it stands, with no remainder." The second possibility is that the division comes out even only after...
Square Roots: Point About Square Roots of Non-Whole Numbers, A
This clip explains that the square roots of non-whole numbers aren't terminating or repeating decimals. "They just keep going in a mixed up sort of way with no pattern at all," the clip states.
Dividing Decimal Fractions: Summary: Dividing Decimal Fractions
This clip summarizes dividing decimal fractions, explaining that, "
in any division problem involving decimals, the first step is to make sure the quotient is a whole number." The clip explains how that is done, then notes that "
we place the deci...
Changing Fractions to Decimals: Changing Fractions to Decimals
This clip explains that changing fractions to decimals is quite different from changing decimals to fractions. It takes us through the process of dividing the numerator by the denominator and asks the question: "How accurate do we want the answer? D...
Changing Fractions to Decimals: Summary: Changing Fractions to Decimals
This clip begins by reminding the student that it's important to be able to change back and forth between decimals and fractions. It then talks about how we change from decimals to fractions, reminding the student that, "
all we do is rewrite (the ...
Square Roots: Summary: Square Roots
This clip summarizes square roots. It revisits the meaning of square roots and squares, then reminds us of the usefulness of square root tables. The clip also mentions that decimal square roots are neither terminating nor repeating decimals, and tha...
Perimeter: Finding the Perimeter When Sides Are Measured in Different Units
This clip explains that, when the sides of a polygon are stated in different units, it's necessary to convert so that they are expressed in the same units. Once this is done, the sides can be added up and the perimeter determined. The clip includes ...