For a 4th-grade geometry unit, which goal is most appropriate?

In a 4th-grade geometry unit, the most appropriate goal focuses on determining angle measures using a protractor. At this educational stage, students are typically introduced to the concepts of angles and their measurements, making it crucial for them to learn how to accurately use measurement tools such as protractors. This skill helps to expand their understanding of geometry by allowing them to quantify angles, which is essential for creating more complex geometric figures and understanding their properties.

The other options, while useful in their own right, are not as aligned with the primary objectives of a 4th-grade geometry curriculum. Describing graphing of ordered pairs is more related to coordinate geometry, which might not be the main focus at this grade level. Memorizing vocabulary can be helpful, but it does not support the active engagement and hands-on practice that are essential for developing a deeper understanding of geometric concepts. Drawing freehand shapes is a valuable skill, yet it may not emphasize the precise measuring and practical application of geometry as effectively as learning to use a protractor does. Therefore, teaching students to determine angle measures equips them with foundational skills necessary for geometry as they progress in their education.