CTL Blog

Helping Students (and Faculty) Connect Information through Concept Mapping

The other day, I was sitting in a meeting and heard a most respected colleague extol the virtues of Edward Tufte’s writings. She was especially complimentary about his essay on the cognitive style of PowerPoint and described how it had changed how she was teaching. I have not yet read Tufte’s essay (I’m planning to order a copy), and I just missed being able to attend his latest workshop in Phoenix last week. However, I gathered from her short description that one of Tufte’s main complaints is that PowerPoint imposes a linear structure on the delivery of information that obscures the connections between the ideas presented. (more…)

Removing the Background of an Image

For a long time one would have to break out the old magic wand or lasso tool and carefully select around the portion of the image they wanted to remove the background. Then copy the selection and place it on a new layer or canvas. That is now a thing of the past! (more…)