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Abstract
Students will find the relevance of using number formats in areas
of life.
Lesson fundamental understandings:
Essential
Questions: In certain circumstances it is best to use
fractions, decimals, or percents.
Standards
National Standards Compare and order
groups containing a mix of fractions, percents and decimals.
State Standards Nevada Mathematics
Content Standards and Indicators of Progress- Grade 7 1.7.6 Compare
and order groups containing a mix of fractions, percents, and
decimals (e.g., on a number line)
Lesson
Prerequisite Skills
Students will have prior knowledge of how to work with fractions,
decimals and percents (basic operations) Students will have prior
knowledge of multiplying decimals. If students don�t have the prior
knowledge, use this context to review on demand.
Teacher
Information/Situations/Setting/Time Teacher
information:
Teach skills of converting fractions to decimals
and percents.
Students and teacher will interact to discuss
this problem:
The sign says "1/4 off everything in the
store." Moreover, that coat you always dreamed of is still in the
window. It�s marked $199.95. So you dash in and ask to try on the
coat. It fits perfectly. The clerk boxes it for you and says, "
That�ll be $199.70 plus tax." Is that right?
Setting/
Time
This lesson will take one 90-minute period or two 45 minute
periods.
Assessment
Students will have answered the question above with explanation
of reasoning.
They must also include the importance of number
formats in certain areas to avoid errors like the problem that arose
in our questioning.
Student Activity/Tasks Students will
read and discuss advantages and disadvantages of using different
representations of a number and explain reasoning by researching
newspaper, magazines, or flyers.
Enrichment/Alternate Activity:
Students might role play the activity in groups of two or small
groups of more students.
Cross-Curricular:
Reading, students will discover various meanings of context
Technology
Requirements/Tools/Materials
- Video camera might be used to record role play.
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Calculators may be used for conversions
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http://school.discovery.com/homeworkhelp/webmath/fract2dec.html
Acknowledgements:
Larry Copes
Additional Resources
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URL:
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