# Activities

• • • ##### Subject Area

• Math: Algebra I: Linear Functions

• ##### Author 6-8

45 Minutes

• ##### Device
• TI-73 Explorer™
• TI-84 Plus
• TI-84 Plus Silver Edition
• TI-Navigator™

## Duck Hunt

#### Activity Overview

The rubber ducks background will be uploaded through the Navigator System as background images. The students will use the point of origin as one of the coordinate pairs and they will use the location of the duck as their second ordered pair. They will use the change in y values over the change in x values to caluclate the slope, then submit the equation of the line using 0 as the y intercept.

#### Before the Activity

The student should have instruction on finding the slope of a linear equation using 2 ordered pairs. This would be a follow up activity allowing them to explore this concept.

#### During the Activity

Load the activity settings from the attached files. There are multiple backgrounds with rubber ducks in various positions on the grid. After loading the first settings allow the students time to find the coordinates of the duck, they will need to use the point of origin, (0,0), as the other point and calculate the slope of the line. They will then need to submit their equations in the format y=mx, or y=mx+0. They studnets should recognize that the y interecpt is 0 since the line crosses at the point of origin. Not all students will have the exact same points for the duck, some may use the head and others the tail. This allows for discussion on how the slopes vary and how this affect the line that is graphed.