This study aims 1) To determine the ability to recognize letters in children aged 4-5 years prior to the application of the letter in the post card media ECD Mekar Sari subdistrict Tapung. 2) To determine the ability to recognize letters in children aged 4-5 years after the implementation of the letter in the post card media ECD Mekar Sari subdistrict Tapung. 3) To determine how much influence …