A hands on simulation based on probabilities from scientific literature is used to investigate the effect of community structure on the prevalence of infected ticks. This anchoring phenomenon is extended to explore population ecology, trophic cascades, biodiversity, and the dilution effect.

TAKEAWAYS:
Participants will come away with a set of lessons that teach many core concepts in ecology using a modeling approach. The hands on simulation will be supplemented by computer models that allow students to explore population growth curves and more complex community relationships.

SPEAKERS:
Daniel Carroll (retired - Yorktown High School), Michael Zito (Yorktown High School: Arlington, VA)

Do probiotic products really contain the number of bacteria they claim? Do expiration dates really matter? How do supplements compare to food products?

TAKEAWAYS:
Practice the use of serial dilution, aseptic technique, and culturing to evaluate probiotic products with the goal of understanding the use of probiotics and the different environmental and nutritional needs required for bacterial growth and reproduction.

SPEAKERS:
Jennifer Vignolini (Biology Teacher)

This session will pair seemingly odd ideas (roleplaying and buffers) together for a dynamic activity that increases student engagement. Roleplaying is an effective instructional strategy that supports ELL learners and those who need harder concepts broken down.

TAKEAWAYS:
Participants will learn a differentiated approach to introducing buffers, one of the most challenging topics in AP Chemistry, in a creative and fun activity where ELL and students of all levels will learn about buffers.

SPEAKERS:
Permeil Dass (: Tyrone, GA)