## Reflection: Shared Expectations Making Sense of Surface Area (day 2 of 2) - Section 4: Presentations

I remove all the posters to a separate table to prevent groups from continuing to work during the presentations. I don't want anyone being rude or distracted while students are presenting as it is very deflating and devalues the effort they have all put in. It is also important for students to notice all the different methods. This allows them to see the mathematical connections and reinforces the concept of surface area rather than a strict step by step process.

Before we begin I briefly address them as an audience and ask them what their role is during another group's presentation. I remind them to be considerate of how it feels to be sharing ideas in front of a large group and ask what they should and should not do. When the first group is set up and ready to go I give them a little extra direction and remind them to face and speak to the audience and to refer to their poster to help them present their solution. When a group does a nice job of sharing  the stage or of explaining their thinking clearly or speaking loudly enough, etc. I like to compliment them in front of the class. This really sets the tone and expectations and improves the subsequent presentations.

Shared Expectations: Setting norms for group presentations

# Making Sense of Surface Area (day 2 of 2)

Unit 9: Exploring Surface Area
Lesson 4 of 6

## Big Idea: Surface area is the sum of the areas of all the flat surfaces on a 3D object.

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Standards:
Subject(s):
Math, surface area, Geometry, collaborative groups, visual representation, group presentations
54 minutes

### Erica Burnison

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