This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Baseball pitchers aren’t born knowing how to throw a ball – it takes years of training and practice to hone this ability. Although prior studies have examined how throwing mechanics differ between youth and adult pitchers, no reports have followed the same group of individuals year after year to watch their skills develop. Now, a US-based research team has sequentially tracked young pitchers to identify the biomechanical changes that occur as a pitcher sharpens their skills. The researchers recruited kids from youth baseball leagues who were in their first season playing as pitcher. Each participant was asked to throw 10 full-effort fastballs from the pitching mound to home plate. Before throwing, the pitcher was outfitted with 23 retroreflective markers. The three-dimensional motions of these markers were tracked through 12 synchronized high-speed cameras..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

This video is meant to be a fun, hands-on session that gets students to think hard about how machines work. It teaches them the connection between the geometry that they study and the kinematics that engineers use -- explaining that kinematics is simply geometry in motion. In this lesson, geometry will be used in a way that students are not used to. Materials necessary for the hands-on activities include two options: pegboard, nails/screws and a small saw; or colored construction paper, thumbtacks and scissors. Some in-class activities for the breaks between the video segments include: exploring the role of geometry in a slider-crank mechanism; determining at which point to locate a joint or bearing in a mechanism; recognizing useful mechanisms in the students' communities that employ the same guided motion they have been studying.

This is a PBL project that used the "Lord of the Rings" book/film as the basis for a study of kinematics. It was specifically designed to help students increase their depth of knowledge for one-dimensional motion and two-dimensional projectile motion so that they could successfully fend off a hypothetical attack of the ork army. The project also allowed students to build a working catapult or trebuchet. Note that the project was designed and delivered per the North Carolina honors Physics curriculum and it can be customized to meet your own specific curriculum needs and resources.