STEM Sketch
★ FlagshipDesign real, fabrication-ready parts for 3D printing, laser cutting, and CNC — the perfect on-ramp to CAD production. From screen straight to your makerspace.
Students building on day one.
A growing suite of hands-on STEM tools — design, engineering, coding, electronics, and more — built to shorten the software learning curve, so students spend their time creating, not learning to navigate the software.
How it works
Up and running in three steps
Create your class
Sign up free and set up a class in under a minute.
Students join instantly
Share a class code, or sync your Google Classroom. No student emails required.
Assign, and watch them build
Pick a tool, set a challenge, and see every student's work and progress in one place.
The STEM Builder difference
Software that gets out of the way.
Every STEM Builder tool is built to be picked up in minutes — so students and teachers spend their time on the STEM concept, not on learning the software. That's the whole idea: shorten the digital learning curve so technology enhances hands-on learning instead of consuming it.
Get straight to it
Across every tool, the learning curve is short by design. Students are creating in the first few minutes — not days from now.
The computer gets out of the way
Built to enhance hands-on education, not revolve around it. The screen is a means to making — not the destination.
Six tools and growing
A widening set of STEM apps — design, engineering, coding, electronics, and more — under one login, one class, one dashboard.
Our most powerful tools, STEM Sketch and Blueprint Lab, do what traditional CAD takes weeks to teach — real 3D and architectural design without the steep ramp. And the work doesn't stay trapped on a screen: export to 3D printers, laser cutters, and CNC machines, and bring students' designs into their hands.
Why teachers love it
Built for real classrooms
Zero prep, zero setup
Runs in any browser. Nothing to install, no materials to buy, no accounts to track down.
Short learning curve
Students spend their time creating, not fighting the software. Powerful tools, without the weeks of training.
Real-world output
Designs don't stay trapped on a screen: print them, cut them, build them.
See real progress
Every student's creations and progress, together on your dashboard.
Fits your curriculum
Designed around NGSS, Common Core, and ISTE practices — activities slot into what you already teach, not the other way around.
Explore the tools
Six tools. One classroom.
Blueprint Lab (Home Designer)
★ FlagshipFloor plan design to full architectural drawing sets — walls, sections, rooflines, elevations, even a 3D walkthrough — real architectural design from day one.
Design a bridge and stress-test it under load, or build a tower and crush-test it — then watch it hold, or crumble. Engineering, physics, and problem-solving in one.
Learn to code by doing — guide characters through mazes and design games with blocks, then graduate to real Python: coding logic and drawing with the turtle tool. Everything runs right in the browser.
Snap together batteries, bulbs, and switches in a live circuit simulator — bulbs really glow, shorts really trip — and work up from first circuits to breadboards and Ohm's Law.
Practice measurement, scale, and precision with instant feedback — plus timed sprints and class leaderboards to keep students pushing for accuracy.
FERPA & COPPA-alignedNo ads, everWe never sell student dataStudents can join with no emailFree to get started
What is STEM Builder?
STEM Builder is a collection of interactive STEM tools that let K-12 students design, build, and code right in the browser — floor plans, bridges, circuits, real Python — then take their work into the real world as 3D prints, laser-cut parts, and CNC files. Every tool is built to flatten the learning curve, so class time goes to making, not to mastering complicated software. Teachers create a class in minutes, students join with a code, and everyone's work saves automatically. It's free for teachers to get started, with no ads and student privacy designed in from day one.
Ready to see your students build?
It takes about a minute to get started — free, no credit card required.