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Two 50-minute class periods.
Fractions, decimals, and percents are ways of renaming the same quantity.
Constructing number meaning and demonstrating that a number can be
expressed in many different forms is evident in the relationship
between fractions, decimals, and percents. Students in the upper
elementary grades need hands-on experiences demonstrating number
sense. Particular attention to common equivalent reference points
should focus on real world practical situations. Textbooks at the
elementary level usually have separate chapters for these three areas.
The textbooks frequently do not include lessons that integrate fractions,
decimals, and percents. This lesson combines fractions, decimals,
and percents and relates them to the real world.
Through the activities in this lesson, students will become familiar
with the relationship between common reference points (¼ = 25%
= 0.25; ½ = 50% = 0.5; ¾ = 75% = 0.75; 4/4 = 1.0 = 100%).
Activities will allow students to visualize and use the relationship
between fractional and percentage parts of a whole.
Prior to these activities students should have some basic understanding
of fractions, decimals, and percents. This activity integrates the
three concepts rather than introducing them.
Mathematics
The learner will:
• Read/write fractions with denominators 2, 4, & 8, including relating
a fraction to the shaded area of a circle.
• Compare/order fractions using standard notation and comparative terminology
(more, less, greater, same, between, almost, about).
• Read and write decimal numbers to hundredths.
• Relate fractions with denominators 2, 4, & 8 to their decimal equivalents.
• Use common reference points, including relating fractions for half and
fourths to their decimal and percent equivalents (identify a value as “between ¼ and ½” or “about
50%”).
• Relate fractions, decimals, and percents to real-life situations.
Louisiana State Department of Education
http://www.louisianaschools.net/lde/uploads/1646.pdf
Louisiana
Mathematics Framework, State Standards for Curriculum Development
(1997) and Teachers’ Guide to Statewide Assessment for
Mathematics
N-1-E: Constructing number meaning and demonstrating that a
number can be expressed in many different forms
N-2-E: Demonstrating number sense and estimation skills, giving
particular attention to common equivalent reference points
N-9-E: Demonstrating the connection of number and number relations
to the other strands and to real-life situations
Louisiana Foundations Skills: Communication, Problem Solving,
Linking and Generating Knowledge.
• Fractions, Decimals, Percents Reference Sheet (1)
• Fractions, Decimals, Percents Reference Sheet (2)
• Fractions and Decimals and Percents Worksheet
• Fractions and Decimals and Percents Worksheet (answers)
• Fractions and Decimals and Percents Constructed Response
• Fractions and Decimals and Percents Constructed Response (answers)
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