Using Classroom Supports: Mia uses charts to engage students in understanding numerical relationships; in the third week of school, she engages her students in counting backwards from 99 to 0, highlighting patterns in place value.

**CONSIDER:**

How can a “game” approach help students understand the purpose of tools like a pocket 100 chart?

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]