This visualization presents average attendance percentages for university courses, displayed as animated bar charts that grow sequentially upon load. Built with D3 v4, it uses `d3.scaleBand` and `d3.scaleLinear` to map course names and attendance values, with SVG rects transitioning via `transition.attr` and easing functions. Interactive mouseover and mouseout handlers alter bar width, position, and fill color between steelblue and orange while temporarily displaying the exact percentage value.