This document, which is intended for Colorado teachers responsible for teaching history to students in grades K-12, explains how to use the principles of contextual learning to integrate academic content standards with career development and workplace competencies. The introduction discusses the guide's purpose, the role of standards and assessments in the context of a changing workplace, the Colorado School-to-Career Partnership, and the guide's structure and content. Section 1 presents the Colorado General Workplace Competencies, which describe the skills and knowledge needed for school and career success and which are organized into the following categories: communication; organization; thinking; technology; and worker qualities. Section 2 offers guidelines for helping special populations of students meet academic content standards while participating in school-to-career opportunities. Section 3 features 18 integration matrices and 18 classroom activities for integrating history standards with workplace competencies. One matrix and one activity are provided for each standard for students in grades K-4, 5-8, and 9-12. Section 4 presents a sample scoring rubric that is aligned with one of the integrated learning activities presented for students in grades 9-12. The addresses of Colorado's six school-to-career regional resource centers are listed. (MN)