Jing is a free cross-platform screen capturing software that allows users to take screenshots and record short screencasts. These screencasts can be instantly shared online or via email. Teachers can use Jing to create instructional videos for students by having students record themselves solving math problems or presenting their findings. The document then provides a 6 step process for downloading, installing, and using Jing to take screenshots and record screencasts, including selecting an area of the screen to capture, adding annotations, and sharing the captured images or videos online.