Both, virtual and printed 3D crystal models can help students and teachers deal with chemical education topics such as symmetry and point groups. In the present paper, two freely downloadable tools (interactive PDF files and a mobile app) are presented as examples of the application of 3D design to study point-symmetry. The use of 3D printing to…

Building hovercraft has proven very popular with the author's engineering students at Knightstown Community High School. The activity uses inexpensive, readily available materials: foam board, a pop-up water bottle cap, a balloon, and hot glue. In this article, the author describes the hovercraft project and how the project provides excellent…