After-School Classes
$65 / lesson · $45 for KindergartenFive or six weekly sessions, a new science or engineering topic each week. Engineering, 3D printing, LEGO robotics and STEM for the youngest.
See the Fall scheduleWestfield, NJ · Ages 5-12
Your kid builds a Mars rover on a Tuesday afternoon.
Small-group science and engineering classes where children build something real every session, then take it home. Curriculum written by an MIT particle physicist and a clinical psychologist. Twelve kids to a room, never more.
Fall term starts Sep 8 · 219 East Broad St., 2nd Fl · 4 min from Westfield station
12 kids
maximum per class, so every child gets hands on the build
- MIT + NortheasternInstructors with real research and engineering careers
- 12 kids per classSmall groups, hands-on, no watching from the back
- Nut-free & supervisedSigned waiver, clear pick-up, allergy-aware snacks
- Something to take homeEvery session ends with a build that leaves with them
Open right now
Three ways to start this month
Everything below is bookable in under two minutes. No account needed, no phone tag.
Day & Mini Camps
$90 / day · 9AM-12PMOne morning of STEM on days school is closed. Lesson, build, experiment and makerspace time. Fifteen children maximum.
See camp dates
Birthday Parties
From $699 + tax · up to 12 kids includedTwo hours of STEM activities, a project every child takes home, party supplies handled. Pizza and themed tableware on the Plus package.
Check a dateFall 2026 · starts Sep 8
The Fall schedule
Pick a day that works, check the grade, book the seat. Series price is prorated if you join mid-cycle, and children can join most classes at any point in the term.
| Day & time | Class | Grades | Starts | Series | Seats | Book |
|---|---|---|---|---|---|---|
| Mon 3:45-5:15PM | Engineering, Level 2Machines, structures, forces, build and test | 3-5 | Sep 14 | $325 | 4 seats left | Book |
| Mon 5:30-6:45PM | 3D Print Lab, Level 2Design in CAD, slice it, print it, take it home | 3-7 | Sep 14 | $325 | 9 seats left | Book |
| Tue 3:45-5:15PM | Engineering, Level 1The starting point, how things are made and why they hold | 1-3 | Sep 8 | $390 | 7 seats left | Book |
| Tue 5:30-6:45PM | 3D Print Lab, Level 1First designs, first prints, first fixes | 1-3 | Sep 8 | $390 | 3 seats left | Book |
| Wed 3:45-4:45PM | STEM ExplorersSixty minutes, one big question, one small build | Kindergarten | Sep 9 | $270 | 6 seats left | Book |
| Wed 5:00-6:30PM | LEGO EngineeringSPIKE kits, motors, gears, machines that move | 1-4 | Sep 9 | $390 | Waitlist | Join waitlist |
| Thu 3:45-5:15PM | Engineering, Level 2Same as Monday, the second weekly slot | 3-5 | Sep 10 | $390 | 8 seats left | Book |
| Thu 5:30-6:45PM | 3D Print Lab, Level 2For older students who want to keep printing | 3-7 | Sep 10 | $390 | 10 seats left | Book |
| Fri 3:45-5:15PM | Engineering, Level 1End the school week building something | 1-3 | Sep 11 | $390 | 2 seats left | Book |
Seat counts are illustrative in this demo. On the live site they would read straight from WooCommerce stock, which already tracks them.
Not sure which class fits?
Book a single try-out lesson for $65. If your child enrols in the series afterwards, we credit it against the term.
Birthday parties
The party where the goodie bag is something they built
Two hours, up to 24 children, a real STEM project each. We set up, we run it, we clean up. You bring the cake.
- DIY STEM project for every child, theirs to keep
- Plates, cups, napkins and tablecloths handled
- Pizza, water and juice included on Party Plus
- Add-ons: potion lab, extra project, extra time
How it works
From booking to pick-up
Pick a slot
Choose a day and grade from the schedule. Prices and remaining seats are on the page, no enquiry form in the way.
Book in two minutes
Card checkout, digital waiver signed in the same flow. You get a confirmation with the term dates and what to bring.
Drop off at 219 East Broad
Second floor, above the shops on Broad Street. Four minutes from Westfield station, street parking outside.
They come out holding something
A rover, a printed part, a working circuit. You get a photo of what they made and what it taught them.
Why parents pick us
Not a screen. Not a lecture. A workshop.
Most enrichment programmes are one adult talking to twenty children. Ours is a twelve-child room where every session opens with a real idea (how light bends, why a truss holds, what makes a rocket go) and then goes straight to the bench.
- Built by people who did the work. Boris holds a Ph.D. in particle physics from MIT; Sofia was a toy engineer at Hasbro; Iskra is a licensed clinical psychologist who designs how the room feels.
- Progression, not repetition. Level 1 to Level 2 to 3D Print Lab, each term builds on the last, so a child who starts in first grade still has somewhere to go in fifth.
- Mixed independent and group work deliberately, so quieter kids get their own build and social kids get a team.
What families say
Parents, in their words
★★★★★“He talks about Wednesday all week. Came home with a working circuit and explained it to his grandfather over dinner.”
★★★★★“Twelve kids to a room makes the difference. She actually gets to build, not watch someone else build.”
★★★★★“Best birthday party we’ve hosted. They ran the whole thing and every kid left with a project instead of plastic junk.”
Placeholder quotes. These slots are where real Google and Facebook reviews belong, the live site currently shows none anywhere, which is the largest single trust gap on it.
Also at Exploratores
Beyond the weekly class
Drop-in Makerspace
$20 first hour · siblings $14Open-ended tinkering for ages 6+. Drop off, or stay and build alongside them.
Hours & booking
Schools, Scouts & Groups
From $35 per child · min 645 or 90-minute workshops. Come to us on Broad Street, or we bring the kit to you.
Group options
Gift CardsNew
$45-$500 · delivered by emailA grandparent’s favourite present. Spendable on any class, camp, party or makerspace visit.
Buy a gift cardBefore you book
Questions parents ask first
What age is this actually for?
Classes run from Kindergarten to Grade 7, split into three bands so the work matches the age. Makerspace is ages 6 and up unsupervised, or any age with an adult. Camps are ages 6-11, with the 3D Print camps at 8-12.
Can we join after the term has started?
Yes, for most classes. The series price is prorated to the lessons remaining, so you only pay for what is left. Each session is a self-contained topic, so nobody arrives lost.
What if my child doesn’t like it?
Book the $65 try-out lesson first. If they enrol in the series afterwards, we credit the try-out against the term fee. Nothing to lose beyond one afternoon.
How many children per instructor?
Twelve children maximum per class, fifteen per mini camp session. Every child has their own build in front of them.
Snacks and allergies?
The space is nut-free. For camps, bring a nut-free snack and a water bottle. Tell us about any allergy at booking and it stays on the register.
What’s the cancellation policy?
For camps, email us at least two weeks before the start date for a 50% refund. Inside two weeks, no refund. Camps are non-transferable. Makerspace admission is non-refundable.
Where exactly are you, and where do I park?
219 East Broad Street, second floor, Westfield NJ 07090, four minutes on foot from Westfield station. Street parking on Broad Street and the municipal lot behind it.
Find us
219 East Broad St., 2nd Floor
Westfield, NJ 07090. Above the shops on Broad Street, four minutes from the train.
Term-time hours
Mon-Fri 3:00PM-7:00PM · Sat 9:00AM-4:00PM
Camp weeks: Mon-Fri from 9:00AM
(908) 913-3141 · info@exploratores.com
Hours shown are a placeholder, the live site publishes none, which costs it local search visibility and walk-in makerspace revenue.
From the blog
What we’ve been building
Why Early Exposure to STEM Matters
29 November 2025 · What actually changes when a seven-year-old builds a circuit rather than reading about one.
Read
Mini Camp Recap: A Morning of STEM Fun
17 February 2025 · Three hours, fifteen kids, and a room full of finished builds.
Read
Kicking Off Hands-On Learning
12 February 2025 · How a session runs, from the opening question to the take-home build.
Read