This document provides an overview of the history of instructional technology used in K-12 classrooms from slates and chalkboards in the 1800s to modern technologies like smartphones, tablets, videos and learning management systems. It discusses the increasing role of technology in education and frameworks like the ISTE standards that emphasize skills like creativity, collaboration and problem solving over memorization. Major developments covered include radio and television education programs in the early 1900s, language labs in the 1950s, the introduction of computers and the internet in schools in the 1980s and 90s, and the growing use of mobile devices, cloud computing and social media today.