Why are there a lot of insects at night? When do sharks sleep? Discover what some animals do at night in this engaging BBC Earth reader. Part of the Ladybird Do You Know? graded readers series, it offers non-fiction STEM content for young English learners.

Covering various topics, Do You Know? encourages inquiry-based learning, integrating video content, project work, and critical thinking to enhance linguistic and 21st-century skills. Featuring four levels from CEFR Pre-A1 to A2, this Level 2 Reader aligns with the A1 CEFR framework, supporting YLE Movers exams. It includes short sentences introducing past tense and simple adverbs.