Abstract: This study aims to 1) to know the ability of symbolic thinking in children aged 5-6 years in PAUD Sabrina Kids District Tenayan Raya Pekanbaru before using used cardboard game, 2) to know the ability of symbolic thinking in children aged 5-6 years in PAUD Sabrina Kids District Tenayan Raya Pekanbaru City after using used cardboard game, and 3) to know the magnitude of the influence of…