# ALEX Lesson Plan Resources

Back
ALEX Lesson Plans
Subject: Mathematics (9 - 12), or Technology Education (9 - 12)
Title: Acres Away!
Description: In the lesson students will use a matrix to determine the area of a triangular piece of land.  The student will be supplied with state plane coordinates and conversion information to calculate the area and then convert to acres.This lesson plan was created as a result of the Girls Engaged in Math and Science University, GEMS-U Project.

Subject: Mathematics (9 - 12)
Title: Battleships
Description: This lesson is designed to review and reinforce three methods (graphing, substitution and elimination) of solving systems of linear equations.  The students will work together and independently to find the solutions to systems of equations that simulate the linear path of the battleship and the path of the battleships’ torpedo. If the solution exists then we will be able to determine if one battleship might be able to sink another.  (Shared with permission of Twyla Fryer.)This lesson plan was created as a result of the Girls Engaged in Math and Science University, GEMS-U Project.

Subject: Mathematics (9 - 12)
Title: Exponential Growth and Decay
Description: This lesson on exponential growth and decay involves a variety of teaching resources. There are a variety of websites used to teach and reinforce how to identify exponential growth or decay and how to solve problems relating to growth and decay. There is a lab provided that will help model these concepts being taught and computer based practice on these concepts. Videos are provided that give a picture image of how exponential growth and decay works. This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project funded by the Malone Family Foundation.

Thinkfinity Lesson Plans
Subject: Mathematics
Title: Counting Embedded Figures      Add Bookmark
Description: In this Illuminations lesson, students look for patterns in an embedded-square problem. After looking at the patterns, students form generalizations for the pattern. This activity sharpens students algebraic thinking and visualization skills.
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
Title: Isosceles Triangle Investigation       Add Bookmark
Description: This student interactive, from an Illuminations lesson, allows students to investigate the relationship between the area of the triangle and the length of its base.
Thinkfinity Partner: Illuminations

Subject: Mathematics,Science
Description: In this lesson, one of a multi-part unit from Illuminations, students use rational functions to investigate the feeding behavior of Northwestern Crows. Biologists have observed that northwestern crows consistently drop a type of mollusk called a whelk from a mean height of about 5 meters. Students investigate the relationship between the height of the drop and the number of drops by viewing a video clip; then, they plan a classroom experiment to model the dropping of whelks in order to collect and analyze data.
Thinkfinity Partner: Illuminations

Subject: Mathematics,Science
Title: Conduct an Experiment      Add Bookmark
Description: In this lesson, one of a multi-part unit from Illuminations, students use rational functions to investigate the feeding behavior of Northwestern Crows. Biologists have observed that northwestern crows consistently drop a type of mollusk called a whelk from a mean height of about 5 meters. Students investigate whether the crows minimize their work by dropping whelks as they do. The amount of work depends upon the height of the drop and the number of times the crow has to fly to this height. To answer the question, students explore the relationship between the height of the drop and the number of drops needed.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Title: Automobile Mileage: Comparing and Contrasting      Add Bookmark
Description: In this lesson, one of a multi-part unit from Illuminations, students compare and contrast their findings from previous lessons of the unit. This lesson allows students the time they need to think about and discuss what they have done in the previous lessons. This lesson provides the teacher with another opportunity to listen to student discourse and assess student understanding.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Title: Bathtub Water Levels      Add Bookmark
Description: In this lesson, one of a multi-part unit from Illuminations, students examine real-life data that illustrates a negative slope. Students interpret the meaning of the negative slope and y-intercept of the graph of the real-life data. By examining the graphical representation of the data, students relate the slope and y-intercept of the least squares regression line to the real-life data. They also interpret the correlation coefficient of the least squares regression line. This lesson incorporates an interactive regression line applet.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Title: Exploring Linear Data      Add Bookmark
Description: In this lesson, from Illuminations, students model linear data in a variety of settings. Students can work alone or in small groups to construct scatterplots, interpret data points and trends, and investigate the notion of line of best fit.
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: Least Squares Regression      Add Bookmark
Description: In this nine-lesson unit, from Illuminations, students interpret the slope and y-intercept of least squares regression lines in the context of real-life data. Students use an interactive applet to plot the data and calculate the correlation coefficient and equation of the least squares regression line. These lessons develop skills in connecting, communicating, reasoning, and problem solving as well as representing fundamental ideas about data.
Thinkfinity Partner: Illuminations

Subject: Mathematics
Title: The Effects of Outliers      Add Bookmark
Description: This lesson, one of a multi-part unit from Illuminations, provides students with the opportunity to investigate the relationship between a set of data points and a curve used to fit the data points, using a computer-based interactive tool. Using the Regression Line Applet, students investigate the effect of outliers on a regression line and easily see their significance.
Thinkfinity Partner: Illuminations