The purpose of this activity is for students to count a collection of up to 20 objects and represent their count with drawings and numbers (MP2).

• Invite two or three previously selected students to share how they organized their objects.
• “¿En qué se parecen las formas en las que están organizados los objetos? ¿En qué son diferentes?” // “What is the same about how the objects are organized? What is different?”
• Then, for each collection shared, ask: “¿Cómo supo _____ que había __ objetos en su colección?” // “How did _____ know there were __ objects in their collection?”

The purpose of this activity is for students to compare groups of up to 20 objects. Students count and represent a new collection of objects and then determine which collection has more objects. If a student's collection was shared in the previous Activity Synthesis, give that student a new collection of objects for this activity.

• Invite previously identified students to share.
• “¿Quién tiene la colección con más objetos? ¿Cómo lo saben?” // “Whose collection has more objects? How do you know?” (_____ has more. They both have a full 10-frame, so I just looked at the other objects.)

The purpose of this activity is for students to choose from activities that offer practice with number and shape concepts. Students choose from five centers introduced in previous units. Students can choose to work at any previously introduced stage of these centers:

• Fewer, Same, More
• Math Fingers
• Tower Build
• Math Stories
• Which One?

Students will continue to choose from these centers in upcoming lessons. Keep the materials from each center organized to use each day.

• “Si le fueran a enseñar a otro estudiante cómo jugar el centro ______, ¿qué le dirían o qué le mostrarían?” // “If you were going to teach another student how to play ________ center, what would you tell them or show them?”