This study aims to determine the effectiveness of using puzzle media on the ability to recognize geometric shapes and colors in early childhood at TK.KB Kumala Wonomulyo with a population of 35 people. Research Data collection was carried out using observation guidelines and an assessment rubric. The collected data were analyzed using descriptive statistical analysis and inferential statistics. The results of the analysis of research data show that puzzle media is effective for the development of the ability to recognize geometric shapes in early childhood in TK.KB. Kumala Wonomulyo.Keywords: Effectiveness; Build Geometry; Color. Abstrak Penelitian ini bertujuan untuk mengetahui efektifitas penggunaan media puzzle terhadap kemampuan mengenal bentuk dan warna bangun geometri pada anak usia dini di TK.KB Kumala Wonomulyo dengan jumlah Populasi sebanyak 35 orang. Penelitian Pengumpulan data dilakukan dengan menggunakan pedoman observasi dan rubrik penialain. Data yang terkumpul dianalisis dengan menggunakan analisis statistik deskriptif dan statistik inferensial. Hasil analisis data penelitian menunjukkan bahwa media puzzle efektif terhadap perkembangan kemampuan mengenal bangun geometri anak usia dini di TK.KB. Kumala Wonomulyo. Kata Kunci: Efektivitas; Bangun Geometri; Warna.