CircuitForge

Meet the cast who each embody one piece of electricity — then build with them on a virtual breadboard.

Level 1

For grown-ups — progress report →A private, on-device snapshot mapped to the skill areas practiced. Export a CSV or print — nothing leaves this device.

Build, code & practice

Five hands-on surfaces — four makers/labs plus the concept quiz. Everything runs on your device; nothing is sent anywhere.

Breadboard Lab Wire a battery, resistor, LED and switch on a real breadboard. Close the loop and watch the current flow — or trip a short. Probe any point with the multimeter. Build Block-Code Bot Snap movement, turn, repeat and if-sensor blocks together, then run your program step-by-step to drive the robot to its goal. Code Logic Lab Wire AND, OR, NOT and XOR gates, flip the switches, and check your circuit against the target truth table. Digital logic Ohm's-Law Lab Predict the current before you run it: a battery and a resistor set V and R — you call I = V ÷ R, then watch the bulb glow to match. The inverse relationship, made visible. Predict Concept Kits 16 quiz kits — 400 questions from static charge to microcontrollers — with a hint after a first miss and an explanation every time. Practice

16 kits · 400 questions · ages 10–14 · NGSS engineering + computational thinking

Mixed practice

Mixed practice — revisit what you’ve learned A short round that shuffles questions from the kits you’ve played, brought back when they’re ready to review. Great for making it stick. CircuitForge Sprint — a calm speed round → Once you’ve mastered a few kits, race your OWN best on what you already know. Timer optional, no penalty for a miss.

Play together

Take turns on one device — or open a room and play a friend online.

Circuit Duel (pass-and-play) 2–4 players take turns on one device — same questions, highest first-try score wins. A quick electronics face-off. Circuit Quest — follow the map → A path through all 16 kits, static charge to microcontrollers. Clear each stop, then move on.

Same idea, another world

Something you practice here shows up somewhere else too — that's real learning that travels.

Ohm’s law is a proportion: at a fixed resistance, voltage grows in step with current — the same fixed ratio behind every ratio.The shared idea: a constant ratio (y = kx) — resistance is the FIXED ratio of voltage to current (Ohm’s law V = I·R), the same fixed ratio you scale in a proportionTry RatioRealm →
CircuitForge mascot

Meet the cast — the characters who teach this

Each one stands for an idea you’ll practice. Tap a character to read their illustrated story and hear their audio drama.

Ensemble stories — the cast together

Explore all the stories →

📚 Books for CircuitForge

Read the story, print a workbook, or color the cast — free PDFs to read offline or print at home.

Browse all books →

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Privacy & how it works Meet the cast