FIRST Lego League has 3 programs: Discover, Explore, and Challenge. Resources for all three divisions can be found here.
FLL Discover is for ages 4-6 (Grades PreK - 1) and is a guided education opportunity for children to learn basic STEM skills with hands-on activities in the classroom utilizing LEGO DUPLO bricks. Students meet roughly 10 times to learn about STEM through DUPLO building and finish their season with a celebration event showcasing their learning.
FLL Explore is for kids ages 6-10 (Grades 2-4) and teaches students the basics of Engineering by having students study real world science concepts, and build a model using LEGO Bricks and program the model using LEGO Education Tools. Teams showcase the following work and share what they have learned with others:
Model: Teams create a LEGO model with a moving/electronic component
Project: Teams research a topic and create a poster board about their findings
FLL Challenge is for kids ages 9-16 (Grades 4-8) and has several parts. This division challenges students to do research, problem solving, engineering, and coding. There are 3 main parts to the division:
Robot Game: Teams design, build, and program a LEGO robot to navigate the game field and do tasks for points in a competition against other teams
Project: Teams research a real world problem and come up with solutions, design, implement, and revise the project during the season; finally sharing the project with the community
Judging: Teams present and answer questions during a 30 minute time slot with a judging panel
Set Up (2 Minutes): Teams set up their robot and presentation
Project Presentation (5 Minutes): Teams present their projects to judges
Project Questions (5 Minutes): Judges ask team members about their projects
Robot Questions (5 Minutes): Judges ask about a teams robot, the designs, and the engineering process
Core Values Questions (3 Minutes): Judges ask teams about how they embody the FIRST Core Values in their team and their day-to-day lives
Feedback (5 Minutes): Judges provide feedback about the questions, including what they liked, and what to improve on. There will also be more in depth written feedback available after the competition.