About FIRST LEGO League Jr.Focused on building an interest in science and engineering in children ages 6-9, Junior FIRST® LEGO® League (Jr.FLL®) is a hands-on program designed to capture young children's curiosity and direct it toward discovering how science and technology impact the world around them. This program features a real-world challenge, to be explored through research, critical thinking and imagination. Guided by adult coaches and the Jr.FLL Core Values, team members work with LEGO elements and motorized parts to build ideas and concepts and present them for review. Each yearly Challenge is based on a different theme and has two main parts, the LEGO Model and the Show Me Poster. Teams consist of two to six children and are guided by at least two adult coaches.
Information from FIRST website