Because this lesson combines all of the skills learned so far in this lesson, there is not an introduction to new material section. Are students correctly identifying the coefficient?
As I am circulating, I am checking to be sure that students are careful with their arithmetic when they are evaluating. I want my students to follow the order of operations when simplifying expressions.
Students do not learn to perform integer operations in 6th grade, but students will be suspicious that something is wrong because of the order of their terms.
I then cold call on students to read the verbal expressions for Problems 26 - I display work for Problem 7. If I see things like 12 - 6 for Problem 4 or 10 for Problem 5, then I know that students are not thinking about using an unknown and are using their actual ages.
Why does the expression you wrote help you solve the problem? How did you know what the variable was? Students complete the Check for Understanding independently.
The first four problems require students to evaluate when n is a decimal. I am looking for: As they are working, I am looking specifically at problems 4 - 7.
How did you know what the variable was? Use the steps above as questions if more are needed. I want to discuss that addition is commutative, and either expression will work. After 10 minutes of partner work time, I bring the class back together for a discussion.
Problem 23 will confuse some students, because the expression will be 6 - I pull a popscicle stick to cold call on a student for work to display on the document camera. How did you know what the constant was? In this set, there are problems that ask students to write numeric expressions without variables.
Some students will not read carefully, and will not use a to represent their age now. The class gives positive and critical feedback on the displayed work.
I ask what the variable stands for, what the coefficient is, and what it means. Are students correctly translating the verbal expression into an algebraic expression? Problem 8 can be difficult for students, in that students have to find half of a quantity. How did you know what operation to use?
Are scholars correctly identifying the variable? I want to give students practice with writing all types of expressions. The first example is a verbal expression that students translate and then evaluate for a given value.
Are students correctly identifying the constant? I intentionally display the incorrect expression, using 4 - 2c. I am looking for: As students work, I circulate around the room.
What does the variable represent given the context of the problem? Students must annotate the problems, define their variables, and keep their work space neat and orderly. Throughout this section, I am praising students for their organization. How did you know what the constant was?
How did you know what operations to use?Evaluating Algebraic Expressions Worksheets Translating Phrases Simplifying Algebraic Expressions Polynomials This ensemble of evaluating algebraic expression worksheets is designed by experts for students of grade 6, grade 7, and grade 8.
Write expressions that record operations with numbers and with letters standing for numbers. For example, express the calculation "Subtract y from 5" as 5 - y. Return from this Algebraic Expressions Millionaire Game to the Millionaire Math Games, Algebra Math Games, or Math Play.
Evaluating Algebraic Expressions Basketball Game. Practice evaluating algebraic expressions with integers by playing this cool and exciting basketball game.
This game is designed for middle school students. You can play this. Learn what variables are and practice using them in expressions.
The major concepts covered in these tutorials are substitution, the distributive property, and combining like terms. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Lesson Item Suggested rationale 2 practice evaluating expressions 7 practice evaluating expressions 8 practice evaluating expressions 11 practice writing expressions 12 practice writing expressions 15 practice writing situations to.
These Algebraic Expressions Worksheets are a good resource for students in the 5th Grade through the 8th Grade. Evaluating One Variable Expressions Worksheets These Algebraic Expressions Worksheets will create algebraic statements with one variable for the student to evaluate.Download