This Class 4 General Science lesson explains First Aid and the importance of a First Aid Box, which contains essential items like bandages, antiseptics, scissors, and medicines to provide immediate help during injuries or emergencies. It teaches how to prepare and organize a First Aid Box and highlights its advantages, such as saving lives and preventing infections. The lesson also covers measuring body temperature and checking blood pressure using simple tools. Emphasizing staying calm and acting quickly, it shows how basic first aid is crucial in homes, schools, and daily life.