There are key differences between learning a first language (L1) and learning a second language (L2). L1 learning starts from birth and develops along with cognition through intrinsic motivation and exposure, while L2 learning often begins in primary school and can be affected by past learning experiences and varying levels of motivation. The content and methods of L1 learning involve learning language through chunks by exposure and interaction with praise and encouragement, whereas L2 is often taught through language items and structures with more limited opportunities and simplified input.