Lesson #1 - The Decimal Concept and Whole Numbers. Introduces the basis of the number system, place value, and the uses of whole numbers and decimals. Explains the concept of decimal fractions and changing fractions to decimals. Graphics show whole numbers to billion and decimals to billionth. Module APD1CD Home Version Win on CD sent via USPS $9.95
Lesson #2 - The Decimal Concept and Decimal Places. Tutorial with graphics and concept checks covers uses of decimal places, reading decimals, and writing decimals. Includes decimal places to millionth. Teaches how to distinguish the location of decimal places and whole number places. Top
Lesson #4 - Rounding Decimals. Tutorial with graphics and concept checks on rules for rounding decimals - - dollars and cents and through hundred thousandths as a rounding place. Makes use of number lines. Reviews from an earlier lesson the names and locations of whole number places and decimal places.
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Lesson #5 - Adding Decimals. Tutorial with graphics and concept checks on rules for adding decimals, focuses on lining-up the decimal point correctly. Covers use of zeros for clarity and for holding the one’s place. Teaches addition of decimals in the contexts of relating decimals to fractions, estimation, and critical-thinking problems. Reviews from an earlier lesson the names and locations of whole number places and decimal places.
Lesson #6 - Subtracting Decimals. Tutorial uses graphics and concept checks to teach rules for subtracting decimals and lining-up the decimal point correctly. Provides ample examples. Includes concept of signed numbers. Teaches subtraction of decimals in the contexts of relating decimals to fractions, estimation, and critical-thinking problems. Has options to review from earlier lessons.
Lesson #7 - Multiplying Decimals. Teaches rules for multiplying decimals, focuses on placing the decimal point correctly, and provides ample examples. Includes concept of signed numbers and multiplying using the power of ten. Teaches multiplication of decimals in the contexts of relating decimals to fractions, estimation, and critical-thinking problems. Has options to review from earlier lessons.
Lesson #8 - Dividing Decimals. Teaches rules for dividing decimals and placing the decimal point correctly. Includes concept of signed numbers and dividing using the power of ten. Teaches division of decimals in the contexts of relating decimals to fractions, estimation, and critical-thinking problems. Shows decimal division as a means to find the decimal part one number is to another, and to find a number when you know the decimal part -- precursors to percentage. Has options to review from earlier lessons.
Lesson #9 - Changing Decimals to Percents. This extensive tutorial explains placing or removing the decimal point correctly before adding a percent sign, and provides ample graphics as examples. Includes decimals with other than two decimal places. Shows conversion of decimals to percents as a process of multiplying by 100. The content of this tutorial is repeated as the third lesson in the course on percents.