Special Right Triangles (Day 3)

Lesson Prep

Lesson Details

• Duration: 50 minutes

• Learning Goal: Build understanding and fluency with special right triangles and solving for missing sides.

Prework

• Make sure you have Chromebooks or some other class set of technology.

• Read Nora Oswald's Bucket of Lies to prepare for activity

• Cut out class sets of cards and gather "buckets" for Bucket of Lies activity

• Watch the embedded video above to see how we use formative assessment

Answer Keys

• Link to Answer Keys

Classwork

• Bucket of Lies

• Special Right Triangles

• Ungraded Formative Assessment / Spiraling

Standards

Common Core

• HSG.SRT.C.8 – Use trigonometric ratios and the Pythagorean Theorem to solve right triangles in applied problems.

TEKS

• G.9(B) – apply the relationships in special right triangles 30°-60°-90° and 45°-45°-90° and the Pythagorean theorem, including Pythagorean triples, to solve problems