LEEF! (English: LIVE!) offers tools to help educators, caregivers and children’s workers share life with God with a new generation. It uses five principles: live, observe, enjoy, empathise and experience. LEEF! uses themes that are attractive and meaningful for children – themes such as sharing, celebrating, food, transport, animals, babies, playing together, being alone and more. Thematic programs use the series B Booklets and knee books with accompanying DVDs. A CD-ROM is supplied with additional material such as daily schedules, talk boards, processing equipment and letters to parents.