But there are specified books to be taught to the kids, so here we are providing the complete knowledge and links for LKG Books PDF Free Download. Since LKG involves primary education, children are taught in a playful manner such as playing, singing, drawing, etc., which in turn helps LKG children easily acquire the knowledge. Children who are around 3 to 4 years old can get admission to LKG. LKG Books 2021: Lower Kindergarten, LKG in short acts as an intermediate between home to school.