Witch's Broom

I teach general chemistry at a community college. Most science and engineering majors take the course in their first semester and need to earn a high grade to gain admittance to a four-year school in their major. Nonetheless, the success rate in this course remains very low, with an attrition rate between 30-50%.

One of the reasons that many of these students are unsuccessful is their beliefs about learning. Many believe that learning is a passive process, that learning is a solitary activity, and that if they are smart they won’t need help. They also greatly underestimate the time they need to devote to studying in order to be successful. Experience is a slow teacher, and by the time they realize these beliefs are inaccurate, most have gotten too far behind and drop out. In the past I have attempted to address these beliefs head on. I’ve spent a lot of the first class lecturing students on what it takes to be successful in chemistry. I even designed a handout that clearly explains how to be successful in the course. As you might guess, my lecture and handout were largely ignored.

Last semester, I decided to try a first-day activity that I hoped would catch students’ attention, foster interdependence, and make them aware of the active nature of learning.

This activity can be used in any course. It can be done in as few as 20 minutes, but can be extended depending on the depth of discussion you choose to facilitate.

PURPOSE

• To create an attention-getting first-day experience
• To help students become aware of the active nature of learning
• To foster interdependence between and among students

SUPPLIES

• Four-foot length of string or yarn, ends tied to create a loop, one per student
• Instructions for Witch’s Broom, one per student (appended below in Support Documents)
• Two questions for student reflection written on board (see directions below)

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Source: --Kirsten Casey, Faculty, Chemistry; Anne Arundel Community College, MD
On Course Newsletter 1/2010