Teachers in Grades K-5 — as well as school librarians and tech-ed specialists — are invited to register now for Code.org’s free workshop on computer science for elementary school on February 17, 8:30AM-4:30PM at Education Development Center, 43 Foundry Avenue in Waltham.  Participants will learn about the 20-unit Code Studio curriculum for Grades K-5.  Bring a computer.  Breakfast and lunch will be provided.  After the workshop, code.org will send each attendee a set of classroom supplies to use for teaching the code curriculum.