RUcore currently supports one community of practice, the Video Mosaic Collaborative (VMC) , to make new discoveries and advance the teaching of mathematics through the use of a collection of observational videos of students learning math collected over 20+ years and largely following the same student cohorts from first grade through high school. A web-based tool, the VMCAnalytic, is provided to create clips, annotate, analyze, publish and share videos from the collection. VMC membership is open to researchers, teacher educators, and teachers in mathematics and related fields. An application to join must be submitted for review. Learn more