Kids' STEM Classes in Millburn, NJ | Genius Gems
Weekly STEM classes, taught by our own team.
Weekly classes at Genius Gems Millburn — 215 Millburn Avenue, Millburn, NJ 07041
Small-group classes for kids, once a week, all semester: design, engineering, chemistry, robotics and coding. Every class is hands-on, and the topics change every semester so there is always something new to learn.
- Grades: Pre-K – 6th grade (Pre-K in Millburn)
- Semester: Winter 2027: Jan 5 – Apr 9
- Class length: 45 minutes, once a week
This semester's classes
Pick a class by grade and weekday. Enroll for the semester, or book a one-time trial class first.
Millburn, NJ — Winter 2027: Jan 5 – Apr 9
Winter 2027 classes
Registration is open.
Early bird: 10% off semester enrollments completed by November 6 at 11:59 PM (Eastern). You're welcome to book a trial class first, but if you enroll after November 6 you pay the regular price. We can't apply the discount after the deadline. Prices on this page are regular prices. The 10% comes off at checkout.
Engineering & Tech — 1st – 2nd
Mondays, 3:45 PM – 4:30 PM · Jan 11 – Apr 5 · Semester $385 · 11 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 3:45 PM, class 3:45 – 4:30 PM, then play until 5:30 PM · $45 a class (instead of $35), for the whole semester
Kids discover how things work by building them. Students wire their first circuits, explore magnetic forces, and design structures that stand up to testing, with an age-appropriate introduction to Newton's 1st and 3rd Laws. Sample projects include a light-up LED projects, a…
Mad Science — K – 2nd
Mondays, 3:45 PM – 4:30 PM · Jan 11 – Apr 5 · Semester $385 · 11 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 3:45 PM, class 3:45 – 4:30 PM, then play until 5:30 PM · $45 a class (instead of $35), for the whole semester
Bubbles, fizz, and "wow!" moments every week. Scientists explore acid and base reactions, discover the laws of science that govern energy and motion, and even make edible experiments they get to taste. Along the way, they begin thinking like real scientists: asking questions,…
STEAM Lab — Pre-K – K
Mondays, 4:45 PM – 5:30 PM · Jan 11 – Apr 5 · Semester $385 · 11 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Pre-K students must be entering kindergarten in September 2027.
Stay and play: Play 3:30 – 4:45 PM, class 4:45 – 5:30 PM · $45 a class (instead of $35), for the whole semester
Our STEAM Lab learners explore Science, Technology, Engineering, Art, and Math through experiments, engineering challenges, and hands-on exploration with kid-friendly robots. Each week builds logical thinking, creativity, and design skills, giving kids a sampling of the classes…
Tech Creator Lab — 3rd – 6th
Mondays, 4:45 PM – 5:30 PM · Jan 11 – Apr 5 · Semester $385 · 11 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 4:45 PM, class 4:45 – 5:30 PM · $45 a class (instead of $35), for the whole semester
Students build, design, and troubleshoot working systems with circuits, motors, gears, and generators, and explore magnetism and propulsion through Newton's Laws. Every project challenges kids to think like engineers: test it, find what's not working, and make it better. This…
Game Coding — 2nd – 4th
Tuesdays, 3:45 PM – 4:30 PM · Jan 5 – Apr 6 · Semester $455 · 13 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 3:45 PM, class 3:45 – 4:30 PM, then play until 5:30 PM · $45 a class (instead of $35), for the whole semester
Kids don't just play games here, they code and design them! Students learn what makes a game fun, from goals and rules to challenges and rewards, then design and code their own video games in Scratch, adding characters, levels, and sound effects.
Mad Science — Pre-K – K
Tuesdays, 3:45 PM – 4:30 PM · Jan 5 – Apr 6 · Semester $455 · 13 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Pre-K students must be entering kindergarten in September 2027.
Stay and play: Play 3:30 – 3:45 PM, class 3:45 – 4:30 PM, then play until 5:30 PM · $45 a class (instead of $35), for the whole semester
Bubbles, fizz, and "wow!" moments every week. Scientists explore acid and base reactions, discover the laws of science that govern energy and motion, and even make edible experiments they get to taste. Along the way, they begin thinking like real scientists: asking questions,…
Engineering & Tech — 1st – 2nd
Tuesdays, 4:45 PM – 5:30 PM · Jan 5 – Apr 6 · Semester $385 · 13 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 4:45 PM, class 4:45 – 5:30 PM · $45 a class (instead of $35), for the whole semester
Kids discover how things work by building them. Students wire their first circuits, explore magnetic forces, and design structures that stand up to testing, with an age-appropriate introduction to Newton's 1st and 3rd Laws. Sample projects include a light-up LED projects, a…
Tech Creator Lab — 3rd – 6th
Tuesdays, 4:45 PM – 5:30 PM · Jan 5 – Apr 6 · Semester $385 · 13 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 4:45 PM, class 4:45 – 5:30 PM · $45 a class (instead of $35), for the whole semester
Students build, design, and troubleshoot working systems with circuits, motors, gears, and generators, and explore magnetism and propulsion through Newton's Laws. Every project challenges kids to think like engineers: test it, find what's not working, and make it better. This…
Intro to LEGO® Robotics — K – 1st
Wednesdays, 3:45 PM – 4:30 PM · Jan 6 – Apr 7 · Semester $455 · 13 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 3:45 PM, class 3:45 – 4:30 PM, then play until 5:30 PM · $45 a class (instead of $35), for the whole semester
Kids build LEGO® models that move, sense, and react, then code them to take on hands-on design challenges. Building on coding basics like events and loops, students begin using conditionals ("if this happens, then do that") so their creations can make decisions on their own.…
VEX© Robotics Competition Team (Open only to returning students) — 4th – 6th
Wednesdays, 4:00 PM – 5:30 PM · Jan 6 – Apr 7 · Semester $585 · 13 classes ($45 per class) · One-time trial class $52.50
Location: Genius Gems Millburn, NJ
Our most advanced robotics program, for students already on the team. Members keep designing, testing, and improving their robot for this season's VEX® IQ Robotics Competition game, Level Up, sharpening their engineering, coding, and driving skills as a team. Students learn what…
Intro to Competition Robotics with VEX IQ — 4th – 6th
Wednesdays, 4:45 PM – 5:30 PM · Jan 6 – Apr 7 · Semester $455 · 13 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 4:45 PM, class 4:45 – 5:30 PM · $45 a class (instead of $35), for the whole semester
This course introduces students to the exciting world of robotics using VEX IQ robots. This course is open to new 4th-6th graders interested in building a foundation in VEX Robotics, so that they can join our Robotics team in the fall 2027 season.
STEAM Lab — Pre-K – K
Wednesdays, 4:45 PM – 5:30 PM · Jan 6 – Apr 7 · Semester $385 · 13 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Pre-K students must be entering kindergarten in September 2027.
Stay and play: Play 3:30 – 4:45 PM, class 4:45 – 5:30 PM · $45 a class (instead of $35), for the whole semester
Our STEAM Lab learners explore Science, Technology, Engineering, Art, and Math through experiments, engineering challenges, and hands-on exploration with kid-friendly robots. Each week builds logical thinking, creativity, and design skills, giving kids a sampling of the classes…
Intro to LEGO® Robotics — K – 1st
Thursdays, 3:45 PM – 4:30 PM · Jan 7 – Apr 8 · Semester $490 · 14 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 3:45 PM, class 3:45 – 4:30 PM, then play until 5:30 PM · $45 a class (instead of $35), for the whole semester
Kids build LEGO® models that move, sense, and react, then code them to take on hands-on design challenges. Building on coding basics like events and loops, students begin using conditionals ("if this happens, then do that") so their creations can make decisions on their own.…
Intro to Robotics with VEX® GO — 2nd – 3rd
Thursdays, 4:45 PM – 5:30 PM · Jan 7 – Apr 8 · Semester $490 · 14 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 4:45 PM, class 4:45 – 5:30 PM · $45 a class (instead of $35), for the whole semester
Kids get hands-on with the VEX® GO construction system, learning how real machines are built through creative, real-world building projects. Early weeks focus on construction skills, structures, and simple mechanisms. As the session progresses, students add motors and use…
This class is for new and continuing students. Content builds on the previous semester and will not repeat.
Pokémon™️ Tournament — 1st – 4th
Thursdays, 4:45 PM – 5:30 PM · Jan 7 – Apr 8 · Semester $490 · 14 classes ($35 per class) · One-time trial class $42.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 4:45 PM, class 4:45 – 5:30 PM · $45 a class (instead of $35), for the whole semester
Dive into the world of Pokémon card game battles! Students will learn the basic rules of the Pokémon Trading Card Game, including how to play and strategize effectively. By playing, they'll build skills in strategic thinking and good sportsmanship. Trainers are encouraged to be…
Design Bar Club — K – 1st
Fridays, 3:45 PM – 4:30 PM · Jan 8 – Apr 9 · Semester $390 · 13 classes ($30 per class) · One-time trial class $37.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 3:45 PM, class 3:45 – 4:30 PM, then play until 5:30 PM · $40 a class (instead of $30), for the whole semester
The ultimate after-school club for creative kids, held right at our Design Bar as much as possible. Each week starts with a short guided lesson, then members dive into an open-ended project, rotating through everything the Design Bar has to offer: slime, Glitter Tiles, Locker…
Makerspace — 2nd – 5th
Fridays, 3:45 PM – 4:30 PM · Jan 8 – Apr 9 · Semester $390 · 13 classes ($30 per class) · One-time trial class $37.50
Location: Genius Gems Millburn, NJ
Stay and play: Play 3:30 – 3:45 PM, class 3:45 – 4:30 PM, then play until 5:30 PM · $40 a class (instead of $30), for the whole semester
The ultimate after-school club for creative kids, held right at our Design Bar as much as possible. Each week starts with a short guided lesson, then members dive into an open-ended project, rotating through everything the Design Bar has to offer: slime, Glitter Tiles, Locker…
Browse all classes at Millburn, NJ
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The weekly schedule
Days across the top, time slots down the side. Stars mark the first and last day of the semester.
Millburn, NJ — Winter 2027
Stay and play
Stay and Play is supervised drop-off time for children enrolled in a class whose family adds play time when they register. Before or after class, kids build and earn tokens, and explore our robot and marble-run stations with our team. Everyone is picked up by 5:30 PM. Choose the play option when you enroll.
Millburn, NJ
- Class only: $35 a class, for the whole semester
- 45-minute class plus supervised play time: $45 a class (instead of $35), for the whole semester
- Play time: 3:30 – 5:30 PM
One play window for everyone. Depending on the class time, the play comes before or after it:
- 3:45 PM class: Play 3:30 – 3:45 PM, class 3:45 – 4:30 PM, then play until 5:30 PM
- 4:45 PM class: Play 3:30 – 4:45 PM, class 4:45 – 5:30 PM
Real STEM, every week
For more than eight years, our small-group classes have been the heart of Genius Gems. Every class is hands-on: kids design, build, break and iterate with our own instructors. The topics change every semester, so a child can keep coming back and always learn something new.
- Hands-on, every class — Kids build, test and fix real projects: circuits, reactions, robots, code.
- Small groups — Capped class sizes so every child gets the instructor's attention.
- Our own instructors — Taught by the Genius Gems team, not a franchise curriculum.
- New topics every semester — No repeats. Fall, winter and spring each bring a fresh line-up.
How to join
Enrolling takes a few minutes online.
- Pick a class — Browse this semester's classes by location, grade and weekday.
- Try it first, or enroll — Book a one-time trial class, or enroll for the whole semester.
- New students: a short recommendation — For a child's first Genius Gems class we ask for one short teacher recommendation. Once per child; future semesters skip this step.
- You're in — We confirm your child's spot and send everything you need before the first class.
Pricing
Classes are sold by the semester. Each class card above shows the semester price and the number of classes. Joining after the semester has started? You pay only for the classes that are left.
Sales tax and a 3% card processing fee are added at checkout.
Cancellation policy
Full refund minus a 10% processing fee up to the early-cancel date. 50% refund up to the mid-cancel date. No refunds after that. Exact dates for this semester are published with the class policies.
Classes at Genius Gems
Questions parents ask
Can we try a class first?
Yes, and it's the easiest way to start. Almost every class offers a one-off trial class at the trial price shown on its card. Booking one takes a minute: pick the class, tap Details & enroll and choose the trial. No application or teacher recommendation is needed to try a class.
What ages are the classes for?
Kindergarten through 6th grade, grouped into grade bands so the level fits. Millburn also runs Pre-K and Kindergarten classes. Pre-K students must be entering kindergarten in September 2027.
How long is a semester?
Fall, winter and spring each run for a set number of weeks. The exact count and dates are on each class card and in the schedule chart.
Do lessons repeat semester to semester?
No. Class lessons change every semester, so kids can enroll every term and always learn something new.
Is a teacher recommendation always required?
Only for a child's first-ever Genius Gems class. Once we have one on file, future semesters skip this step.
What if my child misses a class?
Enrolled students can request one make-up per semester in a comparable class, subject to space. NYC full-semester enrollments (January through June) include two.
What's the cancellation policy?
Full refund minus 10% by the early-cancel date, 50% by the mid-cancel date, none after. Exact dates for this semester are in the class policies.
Pick a location and grab a spot.
Classes fill on a first-come basis. Choose your location to see the schedule and enroll.
Genius Gems Millburn, NJ
215 Millburn Avenue, Millburn, NJ 07041
Classes at Millburn, NJ · Directions · Kids' STEM classes in Millburn, NJ
Genius Gems Chelsea, NYC
555 6th Avenue, New York, NY 10011
Classes at Chelsea, NYC · Directions · Kids' STEM classes in Chelsea, NYC
Questions? Email information@geniusgems.com