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    Is Earth Currently Undergoing a Sixth Mass Extinction?
    The five Phanerozoic mass extinctions were central in shaping biodiversity on Earth today. Due to increasing biodiversity losses, there is debate about whether we are currently undergoing a sixth mass extinction. To help students better understand...
    Lesson
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    Film as a Powerful Tool for Increasing Awareness of the Importance of Belonging in STEM
    People of color in STEM fields can face a variety of challenges with belonging due to structural, cultural, psychological, and institutional barriers. The professional development sessions described in this lesson involved using film as well as...
    Lesson
    1104

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    193

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    Using Current Events to Teach Written, Visual, and Oral Science Communication
    Science, technology, engineering and mathematics (STEM) professionals need the skills to communicate with both technical and public audiences, but formal training in these skills is often lacking. In the nine-hour unit presented here, students...
    Lesson
    1693

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    494

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    Sex-specific differences in Meiosis: Real-world applications
    In traditional classrooms, students are typically presented with facts that they are asked to memorize and recall during an exam.  The rapid explosion of available scientific facts in recent years has made this model of teaching...
    Lesson
    2878

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    1007

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    Building Trees: Introducing evolutionary concepts by exploring Crassulaceae phylogeny and biogeography
    Teaching evolutionary theory is foundational for all biological sciences and a key aspect of overall science literacy. The conceptual framework for understanding evolution relies on thinking clearly about evolutionary trees (phylogenetics) and how...
    Lesson
    1402

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    385

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    Mice, Acorns, and Lyme Disease: a Case Study to Teach the Ecology of Emerging Infectious Diseases.
    Ebola, Zika, the recall of contaminated lettuce - these are just a few recent outbreaks making headlines. Students should be able to connect what they learn in their biology courses to explain these events happening around them. Unfortunately,...

    Courses: MicrobiologyMicrobiology

    Lesson
    12326

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    1871

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    2

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    A virtual laboratory on cell division using a publicly-available image database
    Cell division is a key concept in cell biology. While there are many popular activities to teach students the stages of mitosis, most make use of simple schematics, cartoons, or textbook diagrams. Others engage students in acting out the stages,...
    Teaching Tools and Strategies
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    143

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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 concept maps and timescales are popular tools that...

    Courses: EvolutionEvolution

    Lesson
    3497

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    853

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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 simulation-based activity that allows students to...

    Courses: EvolutionEvolution

    Teaching Tools and Strategies
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    191

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    A Pandemic Pivot: Podcast as an Active Engagement Tool in the Classroom and Beyond
    Higher education in STEM undoubtedly integrates the use of technology as a primary mode for content delivery to undergraduate students. This became especially salient throughout the shift to online education during the COVID-19 pandemic. Despite...
    Lesson
    722

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    141

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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 promote awareness of inequity in science through...
    Lesson
    4332

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    83

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    The Great Petunia Carnage of 2017: A Clicker Case Study Using Petunias to Describe the Effect of Genetic Modification on the Biochemistry of Flower Color and Phenotype in Plants
    In this single class period case study, students examine the difference between genotype and phenotype by studying the mechanisms by which commercially available petunias have been bred to have different phenotypes (flower colors). Students review...
    Teaching Tools and Strategies
    2546

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    211

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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 Adventure” approach encouraging students to...
    Lesson
    1708

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    352

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    Chilling in the Cold: Using Thermal Acclimation to Demonstrate Phenotypic Plasticity in Animals
    The lesson plan described here provides students hands-on, scientific experiences that relate to the globally important issue of climate change and its impacts on animals. Students use the scientific method and basic components of experimental...
    Lesson
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    1191

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    Lights, Camera, Acting Transport! Using role-play to teach membrane transport
    Lights, Camera, Acting Transport! is an active and unique role-play exercise designed to teach introductory biology students basic concepts of passive and active membrane transport. The activity involves three acts in which students, representing...
    Lesson
    2709

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    282

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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 cups of water to represent excitatory postsynaptic...

    Courses: NeurobiologyNeurobiology

    Lesson
    1064

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    168

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    Outside the Norm: Using Public Ecology Database Information to Teach Biostatistics
    Biology students’ understanding of statistics is incomplete due to poor integration of these two disciplines. In some cases, students fail to learn statistics at the undergraduate level due to poor student interest and cursory teaching of...
    Lesson
    4206

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    286

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    Analysis of Microbiomes Using Free Web-Based Tools in Online and In-Person Undergraduate Science Courses
    Our understanding of microbiomes, or the collection of microorganisms and their genes in a given environment, has been revolutionized by technological and computational advances. However, many undergraduate students do not get hands-on experiences...
    Lesson
    2816

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    682

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    The Case of the Missing Strawberries: RFLP analysis
    While solving the fictional mystery of the missing strawberries, students are engaged in a guided-inquiry lesson featuring small-group and class discussions, hands-on activities, and laboratory exercises related to molecular genotyping by...
    Lesson
    4370

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    1260

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    What is Speciation, How Does It Occur, and Why Is It Important for Conservation?
    Speciation provides a framework for classifying biodiversity on Earth and is a central concept in evolutionary biology. To help undergraduate students learn about speciation, we designed a student-centered lesson that uses active-learning...