About FIRST LEGO League Jr


It’s never too early to discover STEM.

STEM stands for to science, technology, engineering and math concepts. FIRST LEGO League Jr. is designed to introduce STEM concepts to kids ages 6 to 9 while exciting them through a brand they know and love − LEGO®.

Guided by adult Coaches, teams (up to 6 members, grades K-3) explore a real-world scientific problem such as food safety, recycling, energy, etc. Then they create a Show Me poster that illustrates their journey of discovery and introduces their team. They also construct a motorized model of what they learned using LEGO elements.

In the process, teams learn about teamwork, the wonders of science and technology, and the FIRST LEGO League Jr. Core Values, which include respect, sharing, and critical thinking. At the close of each season, teams come together at Expos to strut their stuff, share ideas, celebrate, and have fun!



Proven, verifiable impact! Download the latest IMPACT Infographic to see for yourself how immersion in FIRST Programs, even at an early age, positively impact students throughout their education and even into careers.FIRST LEGO League Jr. teams get to:

– Explore challenges facing today’s scientists
– Discover real-world math and science
– Design and build a challenge-related model with a moving part using LEGO® elements
– Create a Show Me Poster and practice presentation skills
– Develop teamwork skills
– Choose to participate in Expos and showcases
– Engage in team activities guided by the FIRST LEGO League Jr. Core Values



The FIRST LEGO League Jr. Core Values are the cornerstones of the program. They are among the fundamental elements that distinguish FIRST LEGO League Jr. from other programs of its kind. We ask that everyone associated with every team understand and honor these Core Values.

– We are a team.

– We do the work. Our coaches and mentors help us learn, but we find the answers ourselves.

– We share our experiences and discoveries with others.

– We are helpful, kind, and show respect when we work, play, and share. We call this Gracious Professionalism®.

– We are all winners.

– We have fun.



Every year, FIRST®LEGO® League Jr. works with experts in the field to create a Challenge that relates to an important real world issue. Past Challenges have been based on topics such as nanotechnology, climate, quality of life for the handicapped population, and transportation. The end result of the design process is a Challenge with two defined parts – the Show Me Poster and the Model.


The Show Me Poster requires teams to illustrate their research and team journey. It provides an opportunity for them to share what they studied, what they learned, and to show information about the team and each team member.

– Create a Show Me Poster using a flat poster board or tri-fold presentation board.
– Use words, drawings, photos, and small objects to tell about what they have learned during their Challenge research.
– Show where they hunted for answers and describe the people they spoke with on their journey.
– Describe their Model and simple machine.
– Tell about the team itself.


The Model gets teams moving! Teams build a representation of what they are researching, based off the Challenge, and incorporate simple machines and movement into their creation.

– Create a Model that fits within a 15” x 15” footprint.
– Design a Model made of LEGO® parts. Typically, a team of six will use 400 to 1,000 LEGO parts during the season.
– Must have at least one motorized piece on the Model.
– Create a simple machine using LEGO ramps, levers, pulleys, gears, wheels and axles, screws, or wedges and incorporates this into their model.

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