Setting up the board…
Take your time — nothing here can go wrong, and you can always try again.
Ready?
Simple Circuits
Take your time — nothing here can go wrong, and you can always try again.
Full screen — no distractions
Frequently Asked Questions
- What is "Simple Circuits" and how do you play it?
- Simple Circuits is a free, interactive science game designed for 4th Grade students. Test materials in a circuit: does the bulb light? It supports 1-4 player(s), takes about 20 min, and is rated medium difficulty.
- Is this game free to play?
- Yes — Simple Circuits is 100% free with no signup required. Just open the page and start playing instantly in your browser on any device.
- What age or grade level is this game for?
- This game is designed for 4th Grade students. The science content is curriculum-aligned for 4th grade level, making it a great supplement to classroom learning.
- Can my child play this game on a tablet or phone?
- Yes. All LittleActivity games work on any device — desktop, tablet, or phone. No app download needed; games run directly in the browser.
- What science skills does this game cover?
- Simple Circuits covers 4th grade science skills through interactive gameplay. It builds problem-solving, critical thinking, and subject fluency in a fun, no-pressure environment.
More 4th Grade Science Games
Forces and Motion
Decide what each push or pull is doing to the object.
medium20 min
Magnetism
Predict whether magnets attract, repel, or do nothing — then test each one.
medium20 min
Habitats
Send each animal to the habitat it is adapted to live in.
medium20 min
Animal Adaptations
Wire each animal's special feature to how it helps the animal survive.
medium20 min
Plant Adaptations
Sort plant features by the habitat they help a plant survive in.
medium20 min
Building Circuits
Predict whether each circuit lights the bulb — a complete loop, or a gap?
medium20 min