To be adequately prepared for a rapidly changing world, our students should possess 21st Century skills that both satisfy employers' demands and prepare them to fully participate in their communities. To meet the needs of the technological and global workforce, differing organizations developed 21st Century frameworks that serve as guidelines for educators— enabling them to integrate new skills into core academic subjects. The Partnership for 21st-Century Learning (P21) has created a framework that addresses the skills, knowledge, and expertise that all students need to be successful in their future work and social life. This framework requires students to develop an understanding of academic subjects and blend this knowledge with three sets of additional skills. In P21, these three skills were defined as: Learning and Innovation Skills, Life and Career Skills, Information, Media, and Technology Skills. Learning and Innovation skills, including the "4C’s" (creativity, critical thinking, communication, and collaboration) are essential for preparing students for complex social and work environments. The development of the “4C’s” requires students to practice these skills in the classroom through individual and team-based learning activities and lessons. Educators should consider adding the 21st Century skills to the core understandings delivered in the classroom because these skills not only prepare students for the future, but also engage students in academic learning essential for learning. To develop 21st-century skills, the role of the teacher has shifted from transferring knowledge to facilitating the learning process and engaging students in metacognition. In the 21st Century classroom, educators utilize instructional strategies where students use big ideas (or core subject matter) and connect content from differing fields and disciplines to solve real-word problems. Educators can assess the degree by which students can utilize the 21st Century Skills through the implementation of technology for learning tasks in the classroom and through the development of formative and summative assessment tools that assess students` understanding.