5n1k-Why?“5n1k-Why?” The questions were prepared to improve children's skills in understanding questions and distinguishing them from each other, creating sentences and giving appropriate answers to questions, and asking questions appropriate to their time. It consists of a total of 80 cards, 40 question and 40 answer cards. How to use it? First, the card for the question is placed and the question is asked (such as "why did he drink syrup?"). Then the answer card is placed and the person is expected to answer (“because he is sick”). If the child cannot answer, an answer card is placed and the appropriate answer is said. The child is expected to repeat. Another way to use it is to place some of the answer cards in front of the child. After the question is asked, he finds the answer among the cards and gives it. What does it develop? receptive language, expressive language, asking questions, reasoning, distinguishing questions, answering questions, creating sentences, establishing a cause-effect relationship. Authors: Expert. Nezihe Çıtav Süngün, expert. Berna Erdebil Gökdere, Dr. Story tezel flagtaroğludrawer: Ibrahim bilgin aksoyPublisher: Lali publicationsyear of publication: 2018number of cards: 40 questions 40 answers, total 80 cardsnumber of prints: 2isbn: 978-625-7733-04-5language: Turkish