Oklahoma Ag in the Classroom Lessons In order to download lessons, you will need to use Adobe Acrobat Reader. If you do not have a copy of Acrobat reader, get one free. Introduction Index by Lesson Title Index by Grade Level and Academic Subject Index by Agricultural Topic Index by Other Categories Lessons for Grades 6-8 Lessons in Spanish New Lessons Additional Resources Still can't find what you're looking for? Ask me. Oklahoma Ag in the Classroom / Oklahoma 4-H Programs / 205 4-H Youth Development / Oklahoma State University / Stillwater, OK 74078 / 405-744-8885 OAITC Home Oklahoma Ag in the Classroom is a program of the Oklahoma Cooperative Extension Service, the Oklahoma Department of Agriculture, Food and Forestry and the Oklahoma State Department of Education.