![]() The unit cell visualization tool allows users to dynamically relate these two representations with each other. #VIEWING MULTIPLE UNIT CELLS IN CRYSTALMAKER SOFTWARE#įigure 2 shows a series of screenshots that demonstrate the use of the “expand” feature of the software for a body-centered cubic crystal. ![]() ![]() As the expansion slider is adjusted or the keyboard shortcut is pressed, the individual unit cells pull outward from each other by a small step. Successive expansions allow the user to see the individual unit cells and how they are related to each other. Figure 2C illustrates that the user can use the mouse to rotate and zoom into the interior of the structure to gain additional perspective. The user can expand and contract the unit cells from multiple perspectives to help develop a visual picture of an extended crystalline structure. This paper describes the design and impact of an inquiry-oriented online curriculum that takes advantage of dynamic mol. visualizations to improve students' understanding of chem. The visualization-enhanced unit uses research-based guidelines following the knowledge integration framework to help students develop coherent understanding by connecting and refining existing and new ideas. The inquiry unit supports students to develop connections among mol., observable, and symbolic representations of chem. Design-based research included a pilot study, a study comparing the visualization-enhanced inquiry unit to typical instruction, and a course-long comparison study featuring a delayed posttest. Students participating in the visualization-enhanced unit outperformed students receiving typical instruction and further consolidated their understanding on the delayed posttest. Students who used the visualization-enhanced unit formed more connections among concepts than students with typical textbook and lecture-based instruction. Revealed the types of connections students made when studying the curriculum and suggested how these connections enabled students to consolidate their understanding as they continued in the chem. #VIEWING MULTIPLE UNIT CELLS IN CRYSTALMAKER SOFTWARE#.#VIEWING MULTIPLE UNIT CELLS IN CRYSTALMAKER FULL#.
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