• Groups of 2–4
• Give each group tools for creating a visual display.
• “Hoy vamos a resolver problemas de medidas” // “Today we’ll solve some problems that involve measurements.”
• “Antes de comenzar a resolver los problemas, hagamos una estimación” // “Before we solve any problem, let’s do some estimation.”
• Read the first problem as a class.
• “Estimen: ¿Aproximadamente cuántos días tiene la bebé elefante?” // “Estimate: About how many days old is the baby elephant?”
• 1 minute: quiet think time
• Display the following ranges and poll the class on their estimate. (Alternatively, post each range in a different part of the classroom and ask students to stand by the range that reflects their estimate.)
  • 280 to 299
  • 300 to 349 
  • 350 to 400
• Select a student who selected each range to explain their estimate. Then ask students if they’d revise their estimate.

• “En silencio, resuelvan los dos primeros problemas durante unos minutos. Luego, discutan sus respuestas con su grupo y trabajen juntos en el último problema” // “Take a few quiet minutes to solve the first two problems. Then, discuss your responses with your group and work on the last problem together.”
• 5 minutes: independent work time
• 5 minutes: group work time
• Monitor for the different representations and strategies used to solve the problems. 
• Assign one problem to each group.

MLR7 Compare and Connect

• “Creen una presentación visual para mostrar cómo resolvieron el problema que le fue asignado a su grupo. Organicen su trabajo para que los demás puedan entenderlo” // “Create a visual display to show how you solved the problem assigned to your group. Organize your work so that it can be followed by others.”
• 3 minutes: group work time
• 5 minutes: gallery walk
• Prompt students to make note of the different strategies they see and any solutions that they question.

• Groups of 2–4

• 6–7 minutes: independent work time 
• 2–3 minutes: group discussion
• Monitor for and select different ways students represented the situations and solved the problems.