The purpose of this activity is for students to work in groups to create an Estimation Exploration activity that focuses on multi-digit multiplication. Students use an object from the classroom, their own drawing, or find an image in a book or from another source and fill in how other students might estimate the quantity of items.

• “¿Qué preguntas tienen todavía acerca de cómo crear una actividad tipo ‘Exploración de estimación?” // “What questions do you still have about creating your Estimation Exploration?” (What if there are so many things that it's hard to estimate, like people in a stadium or leaves on a tree or trees in a forest? What if there are not so many things and estimating is simpler, like the number of kids in a classroom or the number of pattern blocks in a container?)
• Give students a few minutes to make adjustments based on questions, if needed.

The purpose of this activity is for students to facilitate the Estimation Exploration they created in the previous activity for another group in the class. Each group should be paired with another group and they will take turns facilitating their Estimation Exploration for the other group. If time allows, students could facilitate their Estimation Exploration with more than 1 group.

• “¿Qué aprendieron mientras presentaban su ‘Exploración de estimación’?” // “What did you learn as you presented your Estimation Exploration?” (I learned that ranges of estimates might be bigger than you expect. I learned that it’s important to understand the size of the items you are trying to estimate or be familiar with it, otherwise you cannot make good estimates.)