• Groups of 2
• Give each group about 15 geoblocks and solid shapes.
• Display a cylinder and a cone.
• “Piensen en algo en lo que estas figuras se parecen y algo en lo que son diferentes” // “Think of one way that these shapes are the same and one way that they are different.” (The cone and the cylinder roll. The cone has a point but the cylinder doesn't.)
• 30 seconds: quiet think time
• 1 minute: partner share
• Share and record responses.
• “Piensen en qué se parecen y en qué son diferentes las figuras. Clasifíquenlas con su pareja. Expliquen cómo las clasificaron. Después, clasifíquenlas de otra manera” // “Think about how the shapes are the same and different. Sort them with your partner. Explain how you sorted. Then sort in a different way.”

• 10 minutes: partner work time

MLR2 Collect and Display

• Circulate to listen for and collect the language students use to describe and identify the shapes. Listen for words such as “flat,” “round,” “side,” “edge,” and “corner,” as well as the number of sides and the names of two- and three-dimensional shapes.
• Record students’ words and phrases on a chart and update it throughout the lesson. 

• Groups of 2
• Give each group access to the bags and 1 of each shape to examine.
• Display the chart from the previous activity, a rectangular prism, and a triangular prism.
• “¿Qué observan acerca de cada figura sólida?” // “What do you notice about each solid shape?” (All the flat sides of this block are rectangles. 2 sides of this block are triangles and the rest are rectangles.)
• 30 seconds: quiet think time
• 1 minute: partner discussion
• Share responses.

• “Vamos a jugar un juego con nuestras figuras. Sin mirar, cada compañero va a sentir la figura que está dentro de una bolsa. Después ustedes y su compañero, por turnos, van a decir cuál figura creen que es y cómo lo saben. Usen el lenguaje de la tabla como ayuda para describir la figura. Luego, miren en la bolsa para ver qué figura es” // “We’re going to play a game with our shapes. Without looking, each partner will feel a shape inside a bag. Then you and your partner will take turns telling which shape you think it is and how you know. Use language from the chart to help describe the shape. Look in the bag to find out the shape.”
• 8 minutes: partner work time