Students will be able to determine if three side lengths can form a triangle.

Any three sides lengths can't form a triangle? NOPE! Students will use straws of various lengths to investigate this theorem.

10 minutes

**Opener: **As students enter the room, they will immediately pick up and begin working on the opener – Instructional Strategy - Process for openers. This method of working and going over the opener lends itself to allow students to construct viable arguments and critique the reasoning of others, which is **mathematical practice 3**.

**Learning Target: **After completion of the opener, I will address the day’s learning targets to the students. For today’s lesson, the intended target is “I can determine whether three side lengths can form a triangle.” Students will jot the learning target down in their agendas (our version of a student planner, there is a place to write the learning target for every day).

5 minutes

**Instructional Strategy - Table Discussion: **To summarize this lesson, I am going to ask that students have a table discussion on the question – Think about the angles across from each side of a triangle – just knowing the side lengths, you can order the angles from largest to smallest – figure out how. For this summary, I am going to have students discuss at their tables, and I am going to ask someone from each table to share out. After every one shares, I will address the right/wrong answers.

Homework: After the table discussion I will pass out the homework for the students to get started on. Eventhough the assignment is long, it should go quick!