## Guided Practice Strategies - Section 2: Area Model for Horizontal Translations

*Guided Practice Strategies*

# Transformation of Quadratic Functions Day 2 of 2

Lesson 3 of 8

## Objective: Students will be to use transformations to graph quadratic functions.

*50 minutes*

#### Warm up and Homework Review

*10 min*

I include **Warm ups** with a **Rubric** as part of my daily routine. My goal is to allow students to work on **Math Practice 3** each day. Grouping students into homogeneous pairs provides an opportunity for appropriately differentiated math conversations. The Video Narrative specifically explains this lesson’s Warm Up- Transformations of Quadratic Functions Day 2, which asks students to determine which of two methods of graphing a shrink of ½ on a quadratic function is correct.

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This is the second day of a two day lesson. In the previous lesson, students learned about vertical translations, stretches/shrinks, and vertical reflections using an area model. Today they investigate horizontal translations in the same manner (**Math Practice 8**). Once they have written and we have discussed their conclusion for horizontal translations, we put everything together in a variety of Guided Practice problems using equations, graphs, and area models. The final task extends the lesson into cubic functions using a volume model.

Detailed presentation notes are located in the PowerPoint.

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#### Exit Ticket

*3 min*

I use an exit ticket each day as a quick formative assessment to judge the success of the lesson.

Today's Exit Ticket asks students to graph a quadratic function using all possible transformations.

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This assignment has a range of problems asking students to graph, write functions and draw area models given different sets of information and using all learned transformations. The final problem asks students to analyze what transformation occurs when changing the sign of the x value inside the square (**Math Practice 7**). While seemingly obvious, it is a big discovery to many students that this "transformation" doesn't actually change the shape of the quadratic.

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- UNIT 1: Modeling with Expressions and Equations
- UNIT 2: Modeling with Functions
- UNIT 3: Polynomials
- UNIT 4: Complex Numbers and Quadratic Equations
- UNIT 5: Radical Functions and Equations
- UNIT 6: Polynomial Functions
- UNIT 7: Rational Functions
- UNIT 8: Exponential and Logarithmic Functions
- UNIT 9: Trigonometric Functions
- UNIT 10: Modeling Data with Statistics and Probability
- UNIT 11: Semester 1 Review
- UNIT 12: Semester 2 Review

- LESSON 1: Modeling the Speed of Tsunamis with Square Roots
- LESSON 2: Transformations on Quadratic Functions Day 1 of 2
- LESSON 3: Transformation of Quadratic Functions Day 2 of 2
- LESSON 4: Square Root Functions
- LESSON 5: Radical Equations Day 1
- LESSON 6: Radical Equations Day 2
- LESSON 7: Radical Functions and Equations Review
- LESSON 8: Radical Function Test