Total Duration: 
31 to 60 Minutes 
Materials and Resources: 

Technology Resources Needed: 

Background/Preparation: 
Teacher: Solving systems of linear equations by graphing and solving systems of linear equations by substitution should have been taught prior to teaching this lesson. This lesson will be taught in one class period. The teacher will need to preview the PowerPoint presentations. Student: The student needs to know how to write linear equations in standard form, Ax + By = C. The student will need to know the definitions of the following terms: coefficients, eliminate, opposites, and solution. The terms and definitions will be included on the bell ringer. 
Before: The teacher will have the bell ringer on the interactive whiteboard as the students enter the room. The document, Bell Ringer Elimination, is located in the attachment section. The answers are on the second page. The student will write the answers in their notebooks. The teacher will call on students to answer the definitions for elimination and solution. The teacher will select students to write the lines in standard form.
During:
After: The teacher will hand out the exit slip, “Exit Elimination”. The students will turn in the exit slip as they leave the classroom. The teacher will use the exit slip as the formal assessment. 
Attachments: **Some files will display in a new window. Others will prompt you to download. 
Assessment Strategies 
Informal Assessments: The teacher will check for understanding of the standard form of a line during the bell ringer. The teacher will check for understanding during both PowerPoint presentations. The teacher will use the worksheet from Kuta Software to assess student understanding of solving systems of equations using elimination. Formal Assessment: The teacher will use the exit slip and an overall summation of the lesson in its entirety to formally assess students. 
Acceleration: 
The teacher will assign the worksheet, "ACC Elimination". The worksheet has more challenging coefficients and multiplication with both linear equations. The answers are on page two. 
Intervention: 
The teacher will have copies of the PowerPoint slides for the students. The teacher will allow students to be in groups with a peertutor. The teacher will monitor and assist students oneonone. 
View the Special Education resources for
instructional guidance in providing modifications and adaptations
for students with significant cognitive disabilities who qualify for the Alabama Alternate Assessment.
