Evaluation for 3.2a
Materials include explicit (direct) prompts and guidance for educators to build knowledge by activating prior knowledge, anchoring big ideas, and highlighting and connecting key patterns, features, and relationships through multiple means of representation.
The materials include direct prompts and guidance for educators to build knowledge and advice for communicating big ideas under bolded text directives, including Say and Ask, such as, "What is the length of your cube? The width? The height? What is the volume? How could you write an equation to demonstrate the meaning of a cube root?" The materials provide specific prompts and guidance to help students understand concepts, connect key ideas, and access prior knowledge. In "Identify the Line of Best Fit," the materials remind educators that students have previously learned how to graph a scatter plot diagram. Students solve a problem where they determine the line of best fit by using a pegboard, pegs, and a ruler. Then they write an equation for a line. The "Talk About It" section prompts teachers to ask students, "Does the line show the general direction of the data? Are there approximately an equal number of pegs (points) above the line as below? What is the slope of the line? What does it mean? What is the y-intercept? What does it mean?" Through this questioning, students focus on the key concepts of data representation, trend analysis, slope as a rate of change, and the interpretation of the y-intercept. The materials guide educators to activate prior knowledge by reviewing vocabulary previously taught in prior lessons. In "Cube Roots," students review the following vocabulary words: cube roots, volume, edge, length, height, and width. Each of the five big ideas, titled "Strand Overviews," is complete with a section titled "Language Development/Supports," providing specific guidance for educators. This guidance includes direct prompts and guidance stems that enable educators to build knowledge by highlighting and connecting key patterns, relationships, and features through multiple means of representation. The materials utilize the connection of key relationships through multiple means of representation. For example, in a "Unit Rates" lesson, students solve a problem involving unit rates. Students work with pattern blocks to represent the situation and then draw the groups they create and write their numbers as ratios and fractions. After the lesson, in the "Talk About It" section, educators are prompted to ask students about different unit rate situations and what they have in common, anchoring the big idea of using unit rates across multiple situations. In the "More Ideas" section, students work with snap cubes to represent the number of passengers in train cars, and are then guided to see the ratio of passengers to vehicles. These examples help illustrate the multiple representations of unit rates, percentages, and equivalent ratios, enabling students to connect key concepts. In the "Try It!" activity of each lesson, the materials utilize the connection of key relationships through multiple means of representation. In "Fractional Number Sense," students construct a number line to help them estimate portions of a shelf to fill. In this activity, they connect their knowledge of rational numbers, fractions, and whole numbers to help them estimate. At the end of the activity, they compare their model to the actual amount.