KABT Bioblog: The beginning

The leadership of Kansas Association of Biology Teachers (KABT) meets each winter at my father’s cabin at Kanopolis Lake. It’s quiet, often snowy and centrally located. I tag along as host—feeding the birds, deer and KABTer’s and making sure that the facilities are in working order. We sit around the woodstove out on our enclosed porch and have a good time talking biology—sometimes we even do some business.
Continue reading “KABT Bioblog: The beginning”

Authentic Science Activity

Click here to download a pdf of the Worm Lab Directions

Dorsal Blood Vessel

Key terms: toxicity, pulse rate, blood circulation, Phylum Annelida, Class Oligochaeta, freshwater invertebrate

a model for students to conduct real experiments that they design based on a simple “model organism”known as black worms. With very little effort it is possible to provide students

The student will be able to observe and record the pulse rate of Lumbriculus variegatus ( an aquatic segmented worm).

The student will design and carry out an experiment showing the effect of various substances on the pulse rate of Lumbriculus variegatus.

Follow the link to an Adobe PDF copy of this lab developed by Randy Dix and the American Physiology Society. Additional teaching resources at my site.


These worms were made famous by the late Charlie Drewes and many of the techniques are of his design. His website is an invaluable resource and many thanks go to those that maintain and support his teachings. http://www.eeob.iastate.edu/faculty/DrewesC/htdocs/ Continue reading “Authentic Science Activity”