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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...

    Keywords: fitnessCoevolutionCo-adaptation

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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...

    Keywords: cell-cell communicationhomeostasisnegative feedback

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    Using CRISPR-Cas9 to teach the fundamentals of molecular biology and experimental design
    One of the challenges of inquiry-based research experiences is balancing the instruction on skills and techniques with data generation and analysis. This is especially true in technique heavy...

    Keywords: experimental designcrisprmolecular technique

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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...

    Keywords: data analysisscientific methoddata interpretationdisturbance ecologyexperiential learningCarbon sequestration in tropical rainforestPlant Microbial interactionsCanopy GapUndergraduate MicrobiologyNational Education Policy 2020

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    In-Class Workshops to Teach Introductory Biology Students about Undergraduate Research
    Decades of evidence support the premise that undergraduate research experiences are valuable endeavors for science students; however, a lack of knowledge about research and how to get involved can...

    Keywords: undergraduate research experiencesActive Learning WorkshopsResearch PreparationEquity in Research

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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...

    Keywords: geneticsDNAbiochemical structure and function

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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,...

    Keywords: nucleotidessequencingDNAgel electrophoresisChain Termination

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    Graphical Organizers as Course Road Maps: Using a geologic timescale in a history of life course
    Both major and non-major biology students lack understanding of important evolutionary events, how they are spaced in time, and how they relate back to the earth system. Graphical organizers like...

    Keywords: Evolutionecologyextinctionadaptive radiationdiversification

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    Evaluating Representation in Science Through a Peer-Reviewed Research Study
    The demographic representation of scientists featured in biology curricular materials do not match that of the undergraduate biology student population or of the U.S. population. In this lesson, we...

    Keywords: societyRepresentationSTEM equity

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    An Introduction to the Squirrel-Net Teaching Modules
    Although course-based undergraduate research experiences (CUREs) are gaining popularity in biology, most are designed for benchwork-based laboratory courses while few focus on field-based skills....

    Keywords: ecologybehaviortrade-offsScientific ProcessSquirrel-Net

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    Unwrapping Enzyme Kinetics
    Enzyme rates and kinetics are key components used by biochemists to understand how enzymes function. However, students often find it difficult to understand how these experiments are performed and...

    Keywords: kineticsstructure-functionenzymescatalysis

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    Furry with a chance of evolution: Exploring genetic drift with tuco-tucos
    Genetic drift is an important mechanism of evolution, yet undergraduates often fail to understand how it leads to evolutionary change due in part to its random nature. This lesson plan describes a...

    Keywords: EvolutionGenetic DriftBottle neckFounder effectRandom evolutionary processes

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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,...

    Keywords: active sitebindingbinding sitehydrogen bondinghydrophobic effectionic interactionsnon-covalent forces

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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...

    Keywords: microscopypipettingLab Equipment

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    Meiosis Remodeled: Inclusion of New Parts to Poppit Bead Models Enhances Understanding of Meiosis
    A long-standing tradition uses strings of poppit beads of different colors to model meiosis, especially to show how segments of paired homologous chromosomes are recombined. Our use of orthodontic...

    Keywords: meiosischiasma formationchromosome recombination

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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...

    Keywords: bioethicsscience policycell culturedebateHeLa cellsinformed consentrole playsocial justice issues

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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,...

    Keywords: Proposal writingGrant managementNSF S-STEM

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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...

    Keywords: dilutionCalculationLab SkillsMicropipetting

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    The Leaky Neuron: Understanding synaptic integration using an analogy involving leaky cups
    Students have difficulty understanding synaptic integration in neural circuits, and how spatial and temporal summation combine in a target neuron to reach threshold.  This Lesson uses small...

    Keywords: neuron physiologyspatial summationsynaptic integrationtemporal summationthreshold

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    Using Immunocytochemistry and Fluorescence Microscopy Imaging to Explore the Mechanism of Action of Anti-Cancer Drugs on the Cell Cycle
    Understanding and visualizing the cell cycle and mitosis is an essential concept of cell biology. This multi-week lab module has students investigate the mechanism of action of anti-cancer drugs...

    Keywords: fluorescence microscopymitosisCell StructureCell ImagingImmunocytochemistryQuantitative microscopySTEM skills

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