Friedrich Froebel opened the first kindergarten in Germany in 1837, introducing the concept developed by Rousseau and Pestalozzi. By the late 1800s, many countries had started kindergartens for 3-6 year olds. Kindergartens aim to provide a playful learning environment as preparation for primary school, welcoming families. However, kindergartens in Bangladesh face issues like a lack of teacher training and standardized assessment, and can prioritize results over child development. While kindergarten aims to develop skills and character, critics argue it can decrease children's natural liveliness and start an unhealthy achievement race.