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Ratios and Percents. Shannon York Cobb 6 th Grade Campus GPISD. TEKS Objective 3)   Patterns, relationships, and algebraic thinking. The student solves problems involving proportional relationships. The student is expected to: (A)  use ratios to describe proportional situations;

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Shannon York Cobb 6 th Grade Campus GPISD


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shannon york cobb 6 th grade campus gpisd

Ratios and Percents

Shannon York

Cobb 6th Grade Campus

GPISD

slide2

TEKS Objective

3)  Patterns, relationships, and algebraic thinking. The student solves problems involving proportional relationships. The student is expected to:

(A)  use ratios to describe proportional situations;

(B)  represent ratios and percents with concrete models, fractions, and decimals; and

(C)  use ratios to make predictions in proportional situations.

purpose
Purpose
  • The purpose of the lesson is allowing the students to solve problems involving proportional relationships.

The learner will use ratios to describe proportional situations

The learner will represent ratios and percents with concrete models, fractions, and decimals.

slide4

Understanding Rational Numbers and Proportions

6-8

In this lesson, students use real-world models to develop an understanding of fractions, decimals, unit rates, proportions, and problem solving.

  • Number & Operations
instruction
Instruction
  • Introduce lesson by prompting questions
  • Give definition of percent and ratio
  • Have students tell why learning about percents and ratios is relevant
  • Give an example of a percent and a ratio.
  • Activity – Percent benchmark- This activity allow students to use a 1 inch strip of paper to model percents. Fold a 1 inch strip of paper in half. One half of the strip represents 50%.
guided practice
Guided Practice
  • What is the percent for the shaded amount?
independent practice
Independent Practice
  • Write the ratio as a percent.
  • 4/5, 11/100, 6/25 and 4/50
  • Write the percent as a decimal and as a ratio in simplest form
  • 20%, 45%, and 20.5%
conclusion
Conclusion
  • The students learned how to change percents to decimals and decimals to percents.
  • By modeling percents with the 1 inch strips the students enjoyed the activity.