TTLCOL_GASC+Lesson


 * GASC Lesson:** Application of trigonometric ratios

- 2 days
 * Duration**

- Students will be able to find the height of any object around the school
 * Goal**

- Students will be able to solve equations using sine, cosine, and tangent trig ratios (abstract and sequential) - Students will draw diagrams and label existing diagrams to represent the situations (abstract) - Students will use clinometers to measure angles of inclination (concrete)
 * Objectives**

- Class starts with a review of solving equations using trig ratios (Sequential--students use step-by-step process to find answer) - Introduce angles of inclination with word problems and draw diagrams to represent the problems (Concrete--drawing the diagrams of the problems) - Determine the most appropriate ratio for the situation and solve the problem (Abstract--label diagrams and use symbols to solve the equations) - Demonstrate how to use clinometers to measure angle of inclination - Walk the class through an example using students to model each of the steps (Concrete--movement around class with objects: clinometers, tape measures) - Move lesson to different parts of the school to measure heights of objects - Students work in pairs with tape measures and clinometers to choose and measure any objects they would like (Global--outside making own decisions as to which objects to measure and the best way to measure it with the given tools; students can be spontaneous about what they measure and how they do it) - After students measure outside and collect data, we return to the class for a debriefing discussion and closure of the day's activities (Sequential--analyzing and evaluating the heights of same objects from different groups)
 * Procedures**

- If time allows, have students discuss how real-world object can change, and how those changes are reflected in the equations (example: holding hose at different angle)
 * Extension**

- During class I will be constantly circulating among the group and talking with each of them, gathering feedback on an individual and group level.
 * Assessment of Student Learning**

- Finish calculating heights based on data
 * Homework**

Depending on the accommodations necessary for some of my students, different things can be done with this activity. For ESL learners, I have notes already prepared with the diagrams drawn. This will help them focus on the trig ratios, which is the important part of the material. I will also pair the students up ahead of time, which will enable me to pair students with greater needs with other students who are good at working with them. Some students are better suited to work with other that need more patience, and making the groups myself will save time and confusion as well as helping those who need it. The demonstration of directions can be accompanied with a set of written directions for students to help them keep track of the activity while they are outside measuring their own objects. This is something that I could easily walk them through, but I will be busy trying to keep tabs on all of my students--directions for them to use as a reference will be a big help.
 * Accommodations for special populations**