Nathan Mentzer

High School Student Information Access and Engineering Design Performance.

Developing solutions to engineering design problems requires access to information. Research has shown that appropriately accessing and using information in the design process improves solution quality. This quasi-experimental study provides two groups of high school students with a design problem in a three hour design experience. One group has access to the internet while the other does not. Quality of design solution was measured and the two groups were compared. Solution quality did not change significantly. Student information requests were categorized and the most commonly requested piece of information related to cost of materials. Students spent substantially more time in the design process with internet access.

A Modular, Reconfigurable Mold for a Soft Robotic Gripper Design Activity

Soft robotics is an emerging field with strong potential to serve as an educational tool due to its advantages such as low costs and shallow learning curves. In this paper, we introduce a modular and reconfigurable mold for flexible design of pneumatic soft robotic grippers. By using simple assembly kits, students at all levels are able to design and construct soft robotic grippers that vary in function and performance. The process of constructing the modular mold enables students to understand how design choices impact system performance. Our unique modular mold allows students to select the number and length of fingers in a gripper, as well as to adjust the internal geometry of the pneumatic actuator cavity, which dictates how and where bending of a finger occurs. In addition, the mold may be deconstructed and reconfigured, which allows for fast iterative design and lowers material costs (since a new mold does not need to be made to implement a design change). We further demonstrate the feasibility of the modular mold by implementing it in a soft robot design activity in classrooms and showing a sufficiently high rate of student success in designing and constructing a functional soft robotic gripper.

Quantifying the Information Habits of High School Students Engaged in Engineering Design.

This study measured the information gathering behaviors of high school students who had taken engineering design courses as they solved a design problem. The authors investigated what types of information students accessed, its quality, when it was accessed during the students’ process, and if it impacted their thinking during the activity. Students overwhelmingly relied on internet searching to acquire information, rather than printed materials available to them. The sites they found were generally popular rather than technical, and persuasive (i.e., trying to sell something) rather than informative. The high school students understood the need for information, as they sought a large volume of information, which they did, generally, incorporate in their solution development process, but their skill in locating high-quality information was relatively poor.