Using Classroom Supports: By using tools to show their thinking, students are able to make explicit their mathematical understandings and evaluate the soundness of their approach, and Mia is able to use questions to help each student take the next step.

**CONSIDER:**

How do you check in with children’s thinking? What questions do you ask?

These videos are discussed in the Inside Mathematics guide "Using Tools in Support of Thinking, Mia Buljan, 2nd grade," one of 10 practice-focused guides on building classroom climates for mathematical learning.

The videos document key mathematical practices observed in teacher Mia Buljan's 2nd grade classroom over the course of a school year. In the guide (available as a PDF or an iBook download), you can explore extended narratives and questions for reflection around "using tools in support of thinking."

Day 2: Activating students’ sense of wonder in the use of tools for real-life situations [Presenting and Selecting Tools]

Day 2: Presenting new tools and modeling their use [Presenting Tools]

Day 2: Establishing consensus about noise level and care of materials [Presenting Tools]

Day 2: Practicing putting away math bags and doing so quietly [Presenting Tools]

Day 3: Differentiating tools from each other [Presenting Tools]

Day 3: Inviting students to compare answers and defend their thinking [Using Classroom Supports]

Day 14: Observing students’ use of tools to diagnose their thinking and strategy [Using Classroom Supports]

Day 14: Helping students understand the purpose of the pocket 100 chart [Using Classroom Supports]

Day 110: Students use tools to convince others of their approach [Using Tools in Support of Thinking]

Day 110: Praising students’ explanation of thinking [Using Classroom Supports]

Day 158: Students make use of tools to devise their own problems [Using Classroom Supports]