Apropos is a collaborative search and learning activity (CLA) enabling educators and learners to seamlessly blend technology into their classroom lessons applying 21st century skills as defined by ATC21S, UNESCO, OECD, P21 and the European Commission. Built by Continuum Education in Santa Cruz, California, Apropos turns the Internet into a collaborative learning space. With Apropos, educators engage learners with visually rich, problem based, standards aligned activities that inform assignments, augment lesson plans and make online inquiry simple and available on demand. Educational programs gain a collaborative activity tool that enlivens the curriculum and leverages education technology investments ranging from devices, platforms to specialty course tools. Apropos incorporates collaborative search, discovery and curation of materials in any curriculum, supporting any learning standard, using its innovative and easily extended activities. Educators create their own prompts, choose from the instructional activities or modify the activities. Using any search engine, content repository or web site, learners and educators assign, find and incorporate Apropos on any device. Learners share, take notes, vote and comment on others' submissions directly within the activity. Whether in the enterprise or local and state education agency (LEA & SEA), the Continuum Education team has been faced with poorly built, un-extensible solutions that often consider interoperability and standards compliance an after thought. Apropos has been built to be a “good citizen” within the learning ecosystem leveraging Learning Tools Interoperability, specifically LTI2, for baseline integration into various learning platforms. LTI offers a standard way of integrating Apropos, as a Tool Provider, with platforms as Tool Consumers. LTI allows Apropos to integrate with various virtual learning environments (VLEs) or directly between tools for sophisticated and complex learning interactions.