• Groups of 2
• 2 minutes: independent work time to find the fractions of a full turn
• Record students’ responses. Solicit some ideas on the side of a  angle. Emphasize that a angle is of a turn and that it’s the size of the angle formed by the sides of the pieces of the circle created if we cut a full circle into 360 equal parts.
• “Para medir ángulos en grados, podemos usar un transportador” // “To measure angles in degrees, we can use a protractor.” (Consider displaying different types of protractors.)
• Give each student a protractor.
• “Comparen esta herramienta con la herramienta que usaron en la lección anterior. ¿En qué se parecen? ¿En qué son diferentes?” // “Compare this tool to the tool you used in the previous lesson. How are they the same? How are they different?” (Both are semicircles. Both show angles, like , , , and . The protractor is transparent or has a hole, while the paper version is solid. The protractor shows many more lines or tick marks and more numbers around the curve.)

• Groups of 2–4

• 5 minutes: independent work time
• 2–3 minutes: group discussion
• Monitor for students who find each measurement by:
  • Looking for the scale, with a ray on , and counting up on that scale.
  • Subtracting the two numbers (on the same scale) that the rays pass through.

MLR1 Stronger and Clearer Each Time

• “Compartan su respuesta al último problema con su compañero. Por turnos, uno habla y el otro escucha. Si es su turno de hablar, compartan sus ideas y lo que han escrito hasta ese momento. Si es su turno de escuchar, hagan preguntas y comentarios que ayuden a su compañero a mejorar su trabajo” //  “Share your response to the last problem with your partner. Take turns being the speaker and the listener. If you are the speaker, share your ideas and writing so far. If you are the listener, ask questions and give feedback to help your partner improve their work.”
• 3–5 minutes: partner discussion
• Repeat with 2–3 different partners.
• “Ajusten su borrador inicial basándose en los comentarios que les hicieron sus compañeros” // “Revise your initial draft, based on the feedback you got from your partners.”
• 2–3 minutes: independent work time