Population Dynamics Based on Resource Availability & Founding Effects: Live & Computational Models

Abstract

With the looming global population crisis, it is more important now than ever that students understand what factors influence population dynamics. We present three learning modules with authentic, student-centered investigations that explore rates of population growth and the importance of resources. These interdisciplinary modules integrate biology, mathematics, and computer-literacy concepts aligned with the Next Generation Science Standards. The activities are appropriate for middle and high school science classes and for introductory college-level biology courses. The modules incorporate experimentation, data collection and analysis, drawing conclusions, and application of studied principles to explore factors affecting population dynamics in fruit flies. The variables explored include initial population structure, food availability, and space of the enclosed population. In addition, we present a computational simulation in which students can alter the same variables explored in the live experimental modules to test predictions on the consequences of altering the variables. Free web-based graphing (Joinpoint) and simulation software (NetLogo) allows students to work at home or at school.

Effects of inhibiting mTOR with rapamycin on behavior, development, neuromuscular physiology, and cardiac function in larval Drosophila

“…The date and time of new pupae's first observation were also documented. Vials were assessed daily to determine whether water needed to be added to prevent the food from drying out and to ensure that the larvae were still alive in the food, in accordance with protocols developed in previous studies (Potter et al, 2016). Vials were monitored for 11 days after the formation of the first control pupa.…”

A content analysis of alignment messages to the Next Generation Science Standards

“…Analysis of these articles also reveal the rationales directed at teachers for engaging in science practices as a focus of the NGSS. The most frequent rationale dealt with the use of science and engineering practices for sensemaking, learning or developing knowledge (Curran et al, 2016;Potter et al, 2016;Quinlan, 2019;Stroupe & Kramer, 2014;Lawrence et al, 2016;West et al, 2015). Authors also stated that students should engage in science practices to develop understanding of what scientists do (West et al, 2015;Deffit et al, 2017;Harmon et al, 2019), gain an appreciation for science and engineering (Ewing, 2015), clarify relevance of science to everyday life and increase engagement (Stuart et al, 2017), and prepare for college career and citizenship (Bokor et al, 2015).…”