Evaluation for 5.3c
Materials include supports for students in connecting, creating, defining, and explaining concrete and representational models to abstract (symbolic/numeric/algorithmic) concepts, as required by the TEKS.
TheSTEMscopesMath Pulse Grade 5materials provide comprehensive support for students in connecting, creating, defining, and explaining concrete and representational models as they transition to abstract concepts, aligning with the TEKS. In the "Add and Subtract Decimals" scope, students engage in a structured progression that begins with a real-world connection through a video in the "Engage" tab. This is followed by a series ofthreeactivities in the "Explore" and "Explain" tabs, which progress from concrete models, such as real items and place value disks, to representational models like place value charts, and finally to abstract algorithms. The "Elaborate" tab provides additional opportunities for students to apply their understanding across these levels by playing a card game where they have to match the pictures, numbers, and words, and the "Acceleration" tab challenges them to transfer their learning to real-world problem-solving scenarios by reading an article, "Math Today—The Largest Asteroids," and solvingthisproblem posed in the article:"In January 2014, an asteroid named 2014 AA, measuring between 2 and 4 meters, struck Earth. If 2014 AA had a width of 3.23 meters and 2018 LA had a width of 1.42 meters, how much larger was 2014 AA?"Studentsmust alsorespond to the following question: "How is math used in this situation?"The materialssupport students in connecting, creating, and explaining transitions between models and abstract concepts, as required by the TEKS. In the "Triangle Classification" lesson, students cut out and sort triangle figures into categories based on side lengths and angles, then use a hierarchical graphic organizer to represent the abstract rules behind their classifications. They are prompted to explain how their visual groupings—such as scalene, isosceles, right, and acute—align with formal geometric definitions and to justify why some triangles can belong to more than one category. These activities help students make connections between visual models and abstract concepts, reinforcing their understanding of geometric properties and supporting the development of mathematical generalizations.The materialsprovide strong support for students in connecting concrete models to abstract concepts, aligning with the TEKS. Many tasks begin with hands-on or visual representations and guide students toward expressing ideas in symbolic, numerical, or algorithmic forms. For example, in grade 5, studentsuserulers and meter sticks to explore the relationship between feet and inches, as well as to understand centimeters. These hands-on tools support students in solving problems involving unit conversions. The materials provide structured guidance through questions like,"How did you convert meters to centimeters?"and"Do you observe a pattern when converting a measurement unit to the next smallest unit?"These prompts encourage conceptual understanding and pattern recognition, enabling students to transition from concrete exploration to the abstract—converting units using standard algorithms.