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I review a few simple dark energy models, including the currently-standard \u039bCDM cosmological model, and compare their predictions to observational data, to derive cosmological parameter constraints and to study consistency of different data sets. I summarize observational constraints on dark energy dynamics and spatial curvature, two parameters that extend away from the time-independent cosmological constant dark energy and flat spatial hypersurfaces of the standard \u039bCDM model. I also summarize observational constraints on the Hubble constant. 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Choose a wrapped book from a wide variety of genres, each labeled with just four words\/phrases as your only hint. Select a book, unwrap your surprise, and enjoy. It\u2019s yours to keep. \n\nBooks will be restocked daily and are available while supplies last.\n\nIn partnership with LSA Student Government.\n__________\nFor LSA undergrads only. Join us for LSA@Play, a vibrant series of events designed to welcome and support LSA students! Gatherings and activities offer an opportunity for students to prioritize well-being, inclusivity, and community. Plus, get free food and LSA swag! Visit the LSA@Play webpage: lsa.umich.edu\/play for more details, subscribe to receive text\/email updates, and check for additional events being added soon! Events are first-come, first-served, and while supplies last. One swag item per student, and you must be present with an MCard to receive it.\n\nThe University of Michigan College of Literature, Science, and the Arts (LSA) greatly values inclusion and access for all. We are pleased to provide reasonable accommodations to enable your full participation in this event. Please email lsaatplay@umich.edu if you would like to request disability accommodations or have any questions or concerns. 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