Unit 1 Relationships Between Quantities and Expressions Week 1 Lesson 1 – Students will identify the parts of an Algebraic expression

Today’s Objectives Focus Standard: A.SSE.1 – Interpret parts of an expression. Objective: Students will identify the parts of an expression and discuss how many solutions are possible when working with algebraic expressions http://regentsprep.org/Regents/math/ALGEBRA/AV2/indexAV2.htm – Link for lots of Technology practice

Essential Questions How are algebraic expressions and algebraic equations similar and different? How many solutions can an Algebraic expression have? Why? How many solutions can an Algebraic Equation have? Why?

Vocabulary Terms Factors Coefficients Exponents Algebraic Expressions Constant Base Like Terms http://regentsprep.org/Regents/math/ALGEBRA/AV2/indexAV2.htm – Link for lots of Technology practice

Read, Write, Draw, Solve Jasmine has been exercising. She walks 4 miles each day. Write an expression that can represent the situation Explain what each term in your expression represents. How many miles will Jasmine have walked if she walked 4 days? Students will independently complete the RWDS each day. Monitor to check that students are doing the work. Discuss the answers. The opening tasks will increase with difficulty and complexity in order that students will become more comfortable working with context problems, applying mathematical understanding of concepts and learning how to write and explain their answers and reasoning.

What is the difference between an Algebraic Expression and an Algebraic Equation? y = 2x + 3 a2 x 3a – a ½ n – 3.4r = 10 13n – 8 17

You and a partner discuss and record what you already know about the words listed below. You may use words, examples and pictures. Terms Factors Coefficients Exponents Algebraic Expressions Constant Base Like Terms

3n2 + 4n – 12 Expression Terms 3n2 4n -12 Factors 3 and n2 4 and n ___ Coefficients 3 4 ____ Constants ____ ____ 7 Students will practice filling in the boxes to identify each part of the expression.

Expression 8x2 – 3x + 5.5x – 9 Terms Factors Coefficients Constants

Expression 52x + 4 + 3x Terms Factors Coefficients Constants

Expression y2 + ½ + y2 + 4.3 Terms Factors Coefficients Constants

Expression 2(3p) – 7r – 3m + ¾p Terms Factors Coefficients Constants

James said the factors of the expression: 5 · (8 – a) are 5, 8 and a. Do you agree or disagree? Explain. B. Jasmine had to list the coefficients for each term in the following expression: 15x2 – x – 8 Her answer was “15.” Did she get it right? Explain.

Exit Ticket Using the math terms we’ve learned today, list the parts of each expression listed below. -5x2 + 7x – ½ ¾ + x2 – 7.12 Jack says that ¾ is a factor in expression B. Sam says that ¾ cannot be a factor because it is a fraction. Do you agree or disagree? Explain your reasoning.