CourseSource: Resources

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Integrating Manipulatives and Animations to Visualize Holliday Junctions

The complex molecular architecture of Holliday junctions is often challenging for undergraduate biochemistry students to conceptualize. In particular, they have difficulty translating from two-dimensional, linear representations shown in textbooks...

Courses: Biochemistry and Molecular Biology Genetics

dna structureDNA damageDNA recombinationGene crossoverHolliday junction

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5680

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1171

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Meiosis: A Play in Three Acts, Starring DNA Sequence

Meiosis is well known for being a sticky topic that appears repeatedly in biology curricula. We observe that a typical undergraduate biology major cannot correctly identify haploid and diploid cells or explain how and why chromosomes pair before...

Courses: Cell Biology Genetics Introductory Biology

recombinationmeiosisDNA sequenceCrossingoverchromosome structureHolliday junctionhomology

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A Close-Up Look at PCR

The Polymerase Chain Reaction (PCR) is a fundamental laboratory technique that allows for the amplification of many copies of a desired DNA target sequence. Despite its prevalence, undergraduate students often have poor comprehension about the...

Courses: Biochemistry and Molecular Biology Genetics Introductory Biology Science Process Skills

PCRDNA replication

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3066

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521

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A Kinesthetic Modeling Activity to Teach PCR Fundamentals

Most molecular biology and biological sciences students understand that the polymerase chain reaction (PCR) is used to amplify DNA. However, we have found that some students experience conceptual misunderstandings, a lack of detailed comprehension...

Courses: Genetics Science Process Skills

PCR

Teaching Tools and Strategies

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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, which is required for the addition of subsequent...

Courses: Genetics

nucleotidessequencingDNAgel electrophoresisChain Termination

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6316

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557

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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 latex bands to model cohesion of sister...

Courses: Cell Biology Genetics Introductory Biology

meiosischiasma formationchromosome recombination

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1661

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245

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Make It Stick: Teaching Gene Targeting with Ribbons and Fasteners

Manipulating gene expression is a commonly used tool to study the effect of a single gene or the hierarchy of gene networks in many different biological disciplines. When working with mice, the most commonly used techniques to manipulate genes...

Courses: Developmental Biology Genetics

mathematical modelhomologous recombinationCre/loxgene targeting

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2170

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668

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Sequence Similarity: An inquiry based and "under the hood" approach for incorporating molecular sequence alignment in introductory undergraduate biology courses

Introductory bioinformatics exercises often walk students through the use of computational tools, but often provide little understanding of what a computational tool does "under the hood." A solid understanding of how a bioinformatics...

Courses: Biochemistry and Molecular Biology Bioinformatics Introductory Biology

BLASTmultiple sequence alignmentsequence similarityphylogramZika virusAlgorithmScoring Matrix

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5354

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Investigating Enzyme Structure and Function Through Model-Building and Peer Teaching in an Introductory Biology Course

A foundational knowledge of the relationship between structure and function is critical to understanding how enzymes work. The seemingly invisible nature of these molecular interactions makes it challenging for undergraduate students to...

Courses: Biochemistry and Molecular Biology Introductory Biology

structure-functionEnzymeallosteric regulationcompetitive inhibitionfeedback inhibitionnoncompetitive inhibitionproductsubstrate

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3408

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1356

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Using the Cell Engineer/Detective Approach to Explore Cell Structure and Function

As instructors of introductory biology courses for majors and non-majors, we have struggled with teaching the concept of cell structure and function in an engaging way. However, this is a foundational concept that most biology instructors...

Courses: Cell Biology Introductory Biology Science Process Skills

cell functionCell StructureCellular diversityDynamic cellular functionOrganelle function

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3036

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407

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It's a Substrate... It's a Protein...No - It's an Enzyme! Teaching Using 3D Serine Protease Physical Modeling Activities to Confront Misconceptions.

Reported misconceptions of enzyme-substrate interactions highlight the necessity for better, targeted instructional tools and assessments. A series of active learning activities with corresponding three-dimensional (3D) physical models were...

Courses: Biochemistry and Molecular Biology

Protein StructureEnzymes-Substrate InteractionsNoncovalent InteractionsGeometric ComplementaryElectronicsStereochemistrySerine Proteases

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1835

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379

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Plotting Cranial and Spinal Nerve Pathways in a Human Anatomy Lab

Hands-on experiences with cadavers, animal dissections, or plastic models are effective at improving student learning and attitudes in human anatomy courses. The hands-on experience allows students to visualize and experiment with anatomical...

Courses: Anatomy-Physiology Science Process Skills

human anatomyNervous systemBrainCranial nerveNerveSpinal cordSpinal nerve

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Breaking Bricks: A Hands-On Model of Enzyme Kinetics and Inhibition

Enzyme kinetics and the impacts of inhibitors on the enzyme's maximal velocity and ability to bind substrates are important topics in cell biology and biochemistry. However, these topics can be difficult for students to grasp when instructed...

Courses: Biochemistry and Molecular Biology Cell Biology

kineticsEnzymecompetitive inhibition

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1462

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The Developmental Origins of Mythology: A Pandemic-Inspired Innovative Developmental Biology Laboratory Exercise

From an experiential, hands-on perspective, the Developmental Biology Laboratory is easily amenable to a wide range of undergraduate-friendly experiments. Thus, pivoting to a virtual laboratory during the COVID-19 pandemic required significant...

Courses: Developmental Biology

gastrulationaxis formationlimb developmentchimeramidline

Teaching Tools and Strategies

2832

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The Flight Physics Concept Inventory: Reliably Evaluating Aerodynamic Lift, Drag and Associated (Naïve) Concepts of Flight in Class and In-Game

Students often struggle to transfer conceptual understanding from isolated instruction to a coherent mental model. This is especially true for the context of flight physics, fluid dynamics, or the concepts of aerodynamic lift, drag, stall, center...

Courses: Introductory Physics: Calculus-Based

active learninggamificationmisconceptionsaerodynamicsfluid dynamicsResearch-based assessment instrumentConceptual SurveyPRE-/POST-test

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It's a bird! It's a plane! It's biomechanics!

Biomechanics is a discipline that draws from physics and engineering principles to understand the movement and structure of living organisms. It is highly interdisciplinary in nature and can be incorporated into general biology and ecology...

Courses: Anatomy-Physiology Ecology Ecology Evolution

EvolutionecologybatphysiologyAnatomybirdFlightforcesinsect

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Grow the Gradient: An interactive countercurrent multiplier game

The countercurrent multiplier of the loop of Henle in a mammalian kidney is a challenging concept for instructors to teach and for students to learn. We developed an interactive game to support student learning of this dynamic process with a team...

Courses: Anatomy-Physiology Introductory Biology

countercurrent multiplierexcretory systemkidneyloop of Henlemembrane transport

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What do Bone and Silly Putty® have in Common?: A Lesson on Bone Viscoelasticity

Without the use of real-life examples and models, actively instructing and engaging students in complex physiology topics related to bone biomechanics can be challenging. In our large-enrollment Human Physiology & Anatomy courses at the...

Courses: Anatomy-Physiology

structure-functioninjuryAnisotropyHysteresisSkeletal SystemViscoelasticity

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1151

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149

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Exploring the March to Mars Using 3D Print Models

With the increased availability of 3D printers and open databases containing 3D print files, academic institutions are giving more thought into how such technology can be used in the classroom to further student learning. One way that 3D print...

Courses: Introductory Biology Microbiology Science Process Skills

waterMarsmicroorganismsproperties of life

Teaching Tools and Strategies

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Undergraduates Learn Evolution Through Teaching Kindergartners About Blind Mexican Cavefish

The development and implementation of a scientific outreach activity comes with a number of challenges. A successful outreach event must match the sophistication of content to the audience, be engaging, expand the knowledge base for participants,...

Courses: Ecology Ecology Evolution Genetics Introductory Biology