Assessment #9

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Objective

SWBAT demonstrate mastery on unit objectives - systems of linear equations through substitution and graphing.

Big Idea

Mid-unit test! Catch misconceptions before moving too far into this systems unit...

Lesson Author

Jeff Li MTP

New York, NY

Grade Level

Eighth grade

Subjects

Math

Graphing (Algebra)

Algebra

substitution method

Systems of Equations and Inequalities

Standards

8.EE.C.8

Analyze and solve pairs of simultaneous linear equations.

8.EE.C.8a

Understand that solutions to a system of two linear equations in two variables correspond to points of intersection of their graphs, because points of intersection satisfy both equations simultaneously.

8.EE.C.8b

Solve systems of two linear equations in two variables algebraically, and estimate solutions by graphing the equations. Solve simple cases by inspection. For example, 3x + 2y = 5 and 3x + 2y = 6 have no solution because 3x + 2y cannot simultaneously be 5 and 6.

8.EE.C.8c

Solve real-world and mathematical problems leading to two linear equations in two variables. For example, given coordinates for two pairs of points, determine whether the line through the first pair of points intersects the line through the second pair.

MP1

Make sense of problems and persevere in solving them.

MP2

Reason abstractly and quantitatively.

MP4

Model with mathematics.

MP6

Attend to precision.

Warm-up

10 minutes

What Do Early Finishers Do On A Warm-Up?

6 - 6 Warm-up student work sample.pdf

Each day, students complete a warm-up that usually consists of spiraling the previous day's material, in addition to older material. Warm-up problems also sometimes extend lessons that students have encountered before to more unfamiliar contexts.

For a video narrative about how I structure each lesson, and how the warm-up fits in, click here.

Occasionally, I use a quick warm-up on test days to "pre-test" students on concepts that they might be shaky on, as one last way to solidify their understanding. They are based on previous year's data and my own analysis of the most common misunderstandings, and provide a much better assessment and review than, "so, before the test, are there any questions?"