David A. Kolb developed the experiential learning theory which emphasizes a four stage learning cycle of concrete experience, reflective observation, abstract conceptualization, and active experimentation. Kolb's theory identifies four learning styles - assimilating, diverging, converging, and accommodating - that are suited to different stages of the learning cycle. The theory provides guidance for teachers and students in incorporating hands-on learning, reflection, conceptualization, and planning into classroom activities both with and without technology.