To capture a portion of your screen as an image file, simply type SHIFT COMMAND 4 and a little sign that looks like a CODA SIGN appears. Click anywhere at the edge of what you want to 'capture' and then hold the mouse button and drag to the other side of the object. The image file you just captured saved to your computer. Mine save automatically to my desktop but you might have your default set as the documents folder or something similar. You can then drag and drop that image file into an email to send to a student, friend, etc, or can drag it to iPhoto for editing.
If you'd like to capture the entire screen, type COMMAND SHIFT 3.
A colleague asked me if there's a way to capture a specific application window. YES! There is!!!! Type SHIFT COMMAND 4 and then tap the spacebar. The window turns an odd opaque color and a little camera appears. Move the camera over the window you'd like to capture. Then click the mouse. Voila! You captured an application window.
A colleague asked me if there's a way to capture a specific application window. YES! There is!!!! Type SHIFT COMMAND 4 and then tap the spacebar. The window turns an odd opaque color and a little camera appears. Move the camera over the window you'd like to capture. Then click the mouse. Voila! You captured an application window.