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    Coevolution or not? Crossbills, squirrels and pinecones
    This case reinforces the concept of coevolution as a reciprocal change in genetic structure between or among two or more populations, by having students analyze and interpret data, build a...
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    Using Musical Instruments to Model Negative Feedback in the Hypothalamo-Pituitary-Target Gland Axes
    Homeostasis and negative feedback are crucial, yet difficult, concepts for undergraduates, particularly in the context of the hypothalamo-pituitary axes. This interactive activity was designed to...
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    Implementing an online module on microbe-plant interactions in the context of ecological disturbance for Microbiology and Biochemistry courses in India
    This module explores tropical forest gap dynamics and helps students develop hypotheses about climate-related changes in plant-microbial interactions and was implemented in Microbiology and...
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    An Interactive Protocol for In-Classroom DNA Extraction
    Using commonly available materials, this tool allows students to extract DNA, exploring DNA chemistry and the principles of experimental design and execution. We take a “Choose Your Own...
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    Sanger Sequencing by Hand: Using Paper Clips to Demonstrate Chain Termination
    Sanger sequencing is commonly taught with a hands-on approach. Sanger sequencing involves chain termination by dideoxynucleotides, because they are missing the oxygen on the 3’ carbon atom,...
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    Serotonin in the Pocket: Non-covalent interactions and neurotransmitter binding
    This lesson introduces beginning biochemistry students to the concept of a biomolecule binding site, such as a neurotransmitter receptor site or an enzyme active site. A simple organic molecule,...
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    Video Making Tips for Laboratory Instructors
    Demonstration videos are an excellent way to introduce students to new laboratory techniques, but many available videos are of low quality, too long, lack human diversity, and the main narrator is...
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    A Student-Led Hearing on the Use of HeLa Cells in Research
    In this role-playing case study, students will learn about the HeLa cell line and its origins while examining multiple perspectives surrounding the cell line and its uses. The goal of this case...
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    Navigating Proposal Writing and Implementation of an NSF S-STEM Grant Program: Reflections as a First-Time PI
    Recruitment and retention issues are an increasing concern to many institutions nationwide, most especially in regard to underrepresented minority (URM) students enrolled in STEM. It is, therefore,...
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    Dilution and Pipetting Lesson Using Food Dyes
    In this lesson students learn how to use micropipettors to accurately measure small volumes of liquids and perform dilutions using food dyes. Students dilute four food dyes at 10X concentration to...
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    Integrating Primary Literature in a Lecture Course Using a Modified Version of the C.R.E.A.T.E. Approach
    Reforms in undergraduate science education place an increasing emphasis on teaching the skills of practicing scientists, such as reading and interpreting the primary research literature. Many...
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    A Rapid Genetic Screen Using Wisconsin Fast Plants®: A Hands-On Approach to Inheritance of de novo Mutations
    Some concepts in genetics, such as genetic screens, are complex for students to visualize in a classroom and can be cumbersome to undertake in the laboratory. Typically, very large populations are...
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    The Avocado Lab: An Inquiry-Driven Exploration of an Enzymatic Browning Reaction
    Typical biochemistry labs exploring basic enzyme activity rely on costly, time-consuming protein purification and rarely explore enzyme function in situ. Further, complex purification procedures...
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    The Science Behind the ACTN3 Polymorphism
    A common polymorphism in the alpha-actinin-3 (ACTN3) gene results in the lack of ACTN3 protein expression in fast twitch muscle fibers in ~16% of the human population (1). This genetic change has...
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    Science Behind the Lesson: It's a Bird! It's a Plane! It's Biomechanics!
    Active flight is a specialized mode of movement found in insects, birds, and mammals. The anatomy, morphology, physiology, and ecology of flying taxa has changed over evolutionary time. Researchers...
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    An Open Source, Collaborative Electronic Notebook for Undergraduate Laboratory Classes
    To overcome many of the limitations of the paper laboratory notebook (PLN), we developed an electronic laboratory notebook (e-LN) for the Dynamic Genome course at the University of California. The...
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    A Short Bone Biomechanics Primer: Background for a Lesson on Bone Viscoelasticity
    The skeletal system is the first of the body systems that we discuss in-depth in our Physiology & Anatomy courses (PNB 2264/2265 and PNB 2274/2275) in the Department of Physiology and...
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