Evaluation for 5.4a
Materials provide opportunities for students to develop academic mathematical language using visuals, manipulatives, or other language development strategies.
The grade 8, Course 3 materials include opportunities for students to develop their academic mathematical language within lesson topics in the "Student View" through the use of the "Learning Page" and "Explanation" page. For example, the "Learning Page" for the topic "Square root of a perfect square" provides a visual representation of a seven-unit by seven-unit square and demonstrates how to multiply to find the square or count the number of squares. The page also includes an icon with links to videos that students can listen to and watch, in which a teacher explains how to find square roots. These visuals help students understand what a perfect square is and build their vocabulary. Within the "Explanation" page, lessons include lightbulb icons that, when clicked, provide additional information for students who may need it. For example, the lightbulb icon in the topic "Determining if figures are related by a reflection" shows how reflected images should be the same distance from the line of reflection as the original image. These tools and hints help develop academic language using different strategies. Within the "Learning Page" and "Explanation" page of a topic, students can click underlined words that link to the embedded Dictionary. When students click on these words, the Dictionary page for the term opens in a new window, allowing students to view definitions, models, and examples that further support their mastery of academic language. For example, the "Explanation" page for the topic "Properties of rotated figures" includes six words: side, angle (geometry), parallel, rotation (in a plane), origin, and congruent. For the definition of angle (geometry), the program provides visuals for the different types of angles to help solidify the academic vocabulary related to angles. Students actively apply these terms by using an interactive coordinate plane to determine whether statements associated with the rotation of the figure are true or false. Topic activities provide opportunities for students to develop their academic mathematical vocabulary through the use of visual supports and question prompts. These visuals help students analyze, compare, and describe data while connecting their observations to precise mathematical vocabulary. Language development is further supported through optional embedded explanations that include key academic terms, labeled tables and charts, and descriptive supports that reinforce both conceptual understanding and vocabulary acquisition. For example, the topic "Using right triangles to find the slope of a line" includes explicit vocabulary instruction using verbal descriptions and visuals for the terms run, rise, and slope. Students complete the problem set by finding the run, rise, and slope for two similar triangles. Students justify their solution by selecting the statement that explains "why" or "why not." The topic "Scatter plots and correlation" provides students with sentence stems to answer questions with the academic vocabulary of the lesson. This lesson provides students with three sentence stems to use in conjunction with drop-down menu selections. One example from this lesson is, "For these 21 dog sitters, there is ___ correlation between experience and amount charged." In this example, students must understand the vocabulary term correlation and how it describes the given scatter plot.