Learning cards set provides a variety of ways to let your students practice and reinforce important time-telling skills. Grade-level appropriate problems help students develop a better understanding of time. Double-sided cards provide a perfect way for students to practice reading and comparing time, identifying time on digital and analog clocks, finding elapsed time and solving word problems about time. Cards are compatible with the Teacher Created Resource Power Pen (sold separately) for immediate feedback with an audio and visual response. Set is designed for children attending first-grade to fourth-grade.