*Learning Goal: Analyze errors from the ungraded formative assessment and continue practicing with arc length and sector area.*

# Classwork

- Estimation – Tulsa
- Warm Up
- Bucket of Lies (Nora Oswald)
- Practice / Construction Challenge
- Image Credit: Estefania Quintero

# Standards

**Common Core**- HSG.C.B.5 – Derive using similarity the fact that the length of the arc intercepted by an angle is proportional to the radius, and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of a sector.

**TEKS**