# ALEX Lesson Plan Resources

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ALEX Lesson Plans
Subject: Mathematics (8)
Title: Function Machine
Description: During this lesson, eighth grade students will interpret the perimeter of a train of triangles, squares, trapezoids, or hexagons as a function (for each input, there will be exactly one output).  Students will represent their data in a table, as an equation, and graphically.

Thinkfinity Lesson Plans
Subject: Mathematics
Description: This reproducible transparency, from an Illuminations lesson, contains the answers to the similarly named student activity in which students identify the independent and dependent variables, the function, symbolic function rule and rationale for a set of graphs.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Description: This reproducible activity sheet, from an Illuminations lesson, is used by students to record independent and dependent variables as well as the function and symbolic function rule for a set of graphs.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Description: In this lesson, one of a multi-part unit from Illuminations, students view the work of other students in the class and explain their own work. Students move from graph to graph during this time and, without any talking, view the work of their classmates. While on their Gallery Walk, the students think about the data their classmates plotted and whether or not the information accompanying each graph seems appropriate. Each pair of students then stands next to their own work and explains one of the graphs.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Title: Counting Embedded Figures      Add Bookmark
Description: In this lesson, from Illuminations, students look for patterns within a given set of data. After looking at the pattern, students form generalizations for the problem and sharpen their algebraic skills.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Title: Supreme Court Welcome      Add Bookmark
Description: In this unit of two lessons, from Illuminations, students experience triangular numbers in an interesting, real world context--the Supreme Court. Through the discovery of patterns, students are able to generate geometric and algebraic representations for the nth triangular number.
Thinkfinity Partner: Illuminations