Evaluation for 5.4a
Materials provide opportunities for students to develop academic mathematical language using visuals, manipulatives, or other language development strategies.
The MN+ Geometry materials support the development of academic mathematical language through the use of visuals, such as coordinate plane diagrams, graphical representations, and student-constructed figures. In Coursework Student Edition, Unit 2, Lesson 2, students construct line segments and apply the segment addition postulate using tracing paper, a compass, and a ruler. These visuals define and reinforce terms such as line, segment, and ray, and are later applied in a real-world context involving hiking trail distances. In Unit 5, Lessons 5 and 6, students explore rigid transformations using coordinate grids and tracing paper to visualize translations, reflections, and rotations. These visuals are paired with vocabulary, including isometry, congruence, and one-to-one correspondence. The Independent Skills Practice Book reinforces this approach by prompting students to use tools to test triangle construction criteria and identify valid congruence theorems such as side-side-side (SSS), side-angle-side (SAS), and angle-angle (AA) postulates. Students are given opportunities to build academic mathematical language using manipulatives, such as tracing paper, compasses, protractors, and rulers. In Coursework Student Edition, Unit 2, Lesson 2, students use these tools to construct and measure line segments, reinforcing vocabulary related to geometric definitions and postulates. In Unit 8, Lesson 1, students construct triangles based on given criteria and compare results to determine similarity using side-side-side (SSS), side-angle-side (SAS), and angle-angle (AA) postulates. The Independent Skills Practice Book supports this hands-on learning by guiding students to use tools to verify triangle similarity and congruence through construction and measurement. To promote academic mathematical language, the materials incorporate language development strategies, such as collaborative prompts and guided reflection questions. In Coursework Student Edition, Unit 4, Lesson 1, students build on prior vocabulary through structured collaborative activities that reinforce terminology in context. Unit 5, Lessons 5 and 6, prompts students to describe transformations using academic language during partner discussions and written reflections. The Independent Skills Practice Book complements these strategies by asking students to explain whether a sequence of transformations preserves distance and to justify similarity or congruence using precise vocabulary.