I've got those flash cards at the beginning of summer, so I haven't tried them yet with my students. HOWEVER, I practiced mindfulness all summer long by using those cards. I got really familiar with them. I can assure you that they are ready to use in your class and easy to follow for kids from JK to any age group! I have practiced some activities with friends and parents who were asking questions about mindfulness. They really liked them! I can't wait to try them with my students! Seriously, worth the investment!