Facilitators:

• Fred Dillon, Ideastream
• Jennifer Outz, Seminole Middle School

### Session 1

Ratio and Proportion
Ratio and proportion concepts are central to the middle grades curriculum. We will use and connect different mathematical representations (e.g., graphs, tables, symbols, double number lines, tape diagrams) to support students’ understanding of ratio and proportion. We will consider ways to help students develop conceptual understanding of ratio, constant of proportionality (unit rates), and proportional relationships.

Functions: Expressing Relationships Between Two Quantities
Develop the concept of function by building on previous knowledge of ratio and proportion. We will use tasks to create graphs of proportional relationships; differentiate and find similarities between direct proportional variations and all linear functions; apply concepts and algebra skills about expressions and equations to describe functions. Additionally, one task will use data collection and scatterplots to make a connection between functions and statistics.

### Session 2

Expressions and Equations
How does students’ prior work in arithmetic connect to their work with algebraic expressions? How are variables used to represent real-world quantities? We will explore ways to elicit sixthand seventh-grade students’ current understandings of expressions and equations; help them make connections among arithmetic, geometry, and algebra; and develop their capacity to create and analyze methods for solving equations by using reasoning. Looking at meaningful mathematical discourse and posing purposeful questions will be important components of this session.

Expressions, Equations, and Number
By using problem contexts, we will consider how the expressions and equations standards and the number standards progress from the standards in previous grade levels. Our tasks will include using irrational numbers and the Pythagorean theorem, as well as finding equivalent expressions. Samples of student work will be used to explore ways to facilitate student discussion and discourse.

### Session 3

Data and Probability: Exploring Univariate Data
We will collect and use data to explore measures of center (mean, median, and mode) and measures of dispersion (range and interquartile spread). Additionally, we will create and interpret different graphical displays of data. Setting mathematical goals and selecting tasks to support these goals will be important components of this session.

Geometry
We will use area and volume as well as dilations to connect geometry and similarity with ratio and proportion. Our overview of geometry will also focus on rigid transformations (translations, reflections, and rotations) to consider perimeter, angle measure, and congruence. Setting mathematical goals and selecting tasks to support these goals will be important components of this session.

### Session 4

Eliciting, Supporting, and Using Student Thinking and Promoting Productive Struggle
We will consider how to support students’ engagement in productive struggle by carrying out a task, watching a video clip, and examining students’ written work. We will also use these materials to consider methods for eliciting and using evidence of student thinking.