Introduction to Locus
Commencement, 9th Grade, 10th Grade
This lesson will introduce students to the five general rules of loci.
Materials and Resources
5.1 - Rules of Loci.notebook
Students will be able to define locus and find the locus of points: equidistant from two points, equidistant from two intersecting lines, equidistant from two parallel lines, a given distance from a fixed line, and a given distance from a fixed point.
The "do-now" is the first slide of the presentation and will be on the board when the students come in to class. This will help students think about the skills that are needed for this lesson. The slides of the lesson introduce the five basic situations that apply to locus. Each slide poses a question and gives the students the chance to think about how to answer that question, before erasing inside the answer box to reveal the correct answer. Students can come up to the SMART Board and move the blue dots, that have been infinitely cloned, to the correct positions that satisfy each condition. Once everyone is satisfied with the results, the answer can be revealed by erasing inside the box. After the slides that introduce each of the five conditions, there are three more that have short word problems that will utilize the previous conditions discussed.
After the presentation, students will use the remainder of the period to complete the class work assignment and practice what we have discussed. The teacher will walk around to keep everyone on track and check for understanding of the material.
Students will have to complete a class work assignment following the SMART Notebook presentation. For students with 504 accommodations, they will be able to take the assignment home to finish.