Archive for 'Decimals'
Math and International Travel
Posted on 16. Oct, 2011 by Peter Price.
International travelers have to use multiplication and division all the time when budgeting, shopping and getting around by car, to convert local units to more familiar units.
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Quit Moving the Decimal Point!
Posted on 17. Mar, 2011 by Peter Price.
Please, don’t teach your students to move the decimal point – it belongs where it is, between the ones and the tenths.
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Teach Decimal Fractions Part 5: Using Software to Teach Decimals
Posted on 20. Apr, 2010 by Peter Price.
Computer-generated place-value blocks have a number of benefits compared to conventional physical blocks. These benefits include the following: …
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Teach Decimal Fractions Part 4: Decimal Fractions and Percents
Posted on 20. Apr, 2010 by Peter Price.
Decimal fractions are a notational system for recording certain types of fraction. They are not an idea that is separate from other numbers, but are linked to both the whole-number place-value system, and common fraction ideas.
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Teach Decimal Fractions Part 3: Understanding Place Value
Posted on 20. Apr, 2010 by Peter Price.
Place value is the property which assigns a value to each numerical digit according to its position in the number. For example, …
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Teach Decimal Fractions Part 2: What are Rational Numbers?
Posted on 20. Apr, 2010 by Peter Price.
Rational numbers include fractions of all types, percentages and ratios, and present difficulties that simply do not exist with whole numbers. All of these number ideas involve two separate numbers, and a comparison between them.
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Teach Decimal Fractions Part 1: Using the Power of Computers
Posted on 20. Apr, 2010 by Peter Price.
There is widespread research and anecdotal evidence that shows that decimal fraction concepts are poorly understood by many students. Unlike whole numbers that can be modeled effectively using place-value blocks and other base-ten material, rational numbers present a number of difficulties for effectively modeling them.
