I. The final assignment of the rectangular prisms section of the volume chapter ("Filling and Wrapping: Three Dimensional Measurement") of Connected Mathematics 2 Grade Seven: [click to enlarge]:
II. The final assignment of the volume chapter ("Volume") of the 6th grade Singapore Math Primary Mathematics 6B Workbook [click to enlarge]:
Comment on the connections between mathematical challenge, open-endedness, and "real-world" vs. contrived problems.