Dividing Decimal Fractions: Shortcut For Dividing by Powers of Ten
This clip explains that dividing decimals by powers of ten is very much like multiplying them by powers of ten, except that the decimal moves to the left rather than to the right.
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.
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 subtraction process.
Fluid Volume: Practical Problems: Converting Between Metric and U.S. Customary Systems
This clip provides practical problems that are solved by converting between metric and U.S. units. The problems include figuring out a hospital's requirements for antiseptic solution, the capacity of an automobile's gas tank, the amount of cough syr...
Fluid Volume: Practical Problems: Unit Equivalences
This clip includes several practical problems which are solved in part through the use of unit equivalences and the unit cancellation method taught in an earlier lesson.
Fluid Volume: Measuring With Cubic Units
This clip explains that fluid units are not the only means by which to measure the volume inside a container. "We can also measure volume with cubic units," the clip states. "Both volumes measure the same amount of space; these are just different wa...
Renaming Fractions: Summary: Renaming Fractions
This clip summarizes renaming fractions, explaining that numerators and denominators can be multiplied or divided by the same non-zero number without changing the value of the fraction. The clip concludes by stating that there are two classes or fam...
Dividing Fractions: Reciprocals
This clip explains that the reciprocal is the fraction that results when the original fraction is inverted.
Area and Volume: Finding the Area of a Rectangle
This clip explains what a rectangle is and how to determine its area. "The formula is easy to remember," the clip states. "The area of a rectangle is equal to the length times the width." Three practical problems follow that are solved by utilizing ...
Area and Volume: Finding the Area of a Square
This clip explains that a square is a special kind of rectangle whose 4 sides are the same length. The clip states that the formula for finding the area of a square is: "Area equals s squared." The clip includes two practical problems.