Grade 6 Name_____Answer Key_______ Geometry & Measurement Directions: Use the diagram below to answer the questions. = 1 square unit 1. If the net was cut out along the solid lines and folded along the broken lines, what figure would be created? Draw the model and describe it in complete sentences. Drawing Sample Response: The figure would have 3 faces that are rectangles and 2 faces that are triangles. The student might use “triangular prism” in the response depending on prior experiences with prisms. 2. What is the surface area of the figure? The student will most likely count the number of squares within each shape and indicate the approximate number. The main idea is estimation in conjunction with 2-D and 3-D models. Each triangle is about 6 square units. Each parallelogram is about 23 square units. The total surface area would be approximately 2(5) + 3(22) or about 76 square units since the total area would be the sum of all the individual areas. As long as the student response is close to 70.5 square units and the work is mathematically sound, the estimated response is okay. Grade 6 Name_____Answer Key_______ Geometry & Measurement Scoring Guide Question 1 Explanation Question 2 0 1 Student does not Student is able to draw a 3-d draw a model model. that represents a rectangular Model does not prism. represent a prism. Student does not Student gives a attempt to correct explain the figure. description of the figure, but is nonNo or poorly specific about the written characteristics of explanation. the shape. Student does not Student finds find area. areas for some of the shapes. Student’s estimate is not Student’s invalid. estimate is somewhat reasonable. 2 Student is able to draw an accurate model. Explanation is well written Student explains the figure using the concepts of rectangle and triangle. Student finds area for each shape. Student is able to accurately estimate the area.