3 Best STEM Toys for 12-Year-Olds: Electronics, Robot Building and Coding
Many 12-year-olds are ready for projects with real consequences: a circuit that stays dark until it’s wired correctly, or a robot that only turns when the code is right. This guide keeps to three picks that cover electronics, robot building and coding at a level a 12-year-old can grow into, rather than a long list of look-alikes.
We chose these from the makers’ own product pages and support information, not hands-on testing. Ages, features and requirements are the makers’; the notes on fit are our judgment. Prices and stock change, so check with the seller before you buy. STEMGeek may earn a commission if you buy through some links on this page.
Checking prices? We track which picks from our guides Amazon is showing below its own reference price. See the current list, updated twice a day from November 20 to December 1.
The three picks at a glance
| Pick | What it is | Maker’s age | Coding | Device or power |
|---|---|---|---|---|
| Snap Circuits Pro SC-500 Check price on Amazon | Electronics kit | 8+ | None | Batteries; no screen |
| Makeblock mBot2 | Robot kit to build and code | Not quoted (maker’s pages disagree) | Blocks to Python | Device to run mBlock; built-in rechargeable battery |
| Sphero RVR+ Check price on Amazon | Ready-built programmable robot | Grades 6–12 | Drawing, blocks, JavaScript, Python | Phone, tablet or computer; rechargeable battery |
Prefer a gift that arrives more than once? Our guide to STEM subscription boxes compares eight current options, including KiwiCo, MEL Chemistry and CrunchLabs.
Our picks
1. Snap Circuits Pro SC-500
From the maker:
- Elenco model SC-500, part of the core Snap Circuits line; Elenco rates its standard Snap Circuits models ages 8+.
- Battery powered. Elenco says to use only the included battery holders or its specified AC-SNAP power supply.
- Replacement parts and manuals are available from Elenco.
Why it’s on the list: Snap Circuits parts snap together on a base grid, so a 12-year-old can build a working circuit, change one part and see what happens, without soldering or loose wires. It’s the only pick here that teaches electronics on its own terms rather than as a side effect of robotics, and it needs no screen at all. Because Elenco sells replacement parts and manuals, a lost piece doesn’t end the kit’s useful life.
Keep in mind: It may suit a 12-year-old who is new to electronics, with help as needed, while one who has already done a lot of Snap Circuits may find the format familiar. There’s no programming involved. Check Elenco’s listing for the parts list and project count, and follow its power-supply instructions rather than improvising with other batteries or adapters.
See Elenco · Check US stock at AC Supply
2. Makeblock mBot2
From the maker:
- Makeblock’s newer model in its mBot line; the original mBot is still sold separately.
- Coded in Makeblock’s mBlock software, from block coding through to Python.
- Can also be driven from a smartphone or gamepad, or run in automatic modes.
- Built-in rechargeable lithium battery; Makeblock quotes about five hours of play per charge.
Why it’s on the list: mBot2 covers the move from drag-and-drop blocks to typed Python inside the same software, which is the step many 12-year-olds are ready to take. Putting the robot together first also means they understand the hardware their code is controlling. The rechargeable battery avoids a steady supply of disposables.
Keep in mind: Makeblock’s own pages show different minimum ages for mBot2, so we haven’t quoted one; the Python path is why we think it suits this age. You’ll need a computer or tablet that runs mBlock, so check Makeblock’s supported platforms first. Makeblock’s US store says it ships only to the contiguous United States. Buy mBot2 by name: the older mBot is a simpler kit.
3. Sphero RVR+
From the maker:
- Sphero RVR+, SKU 940-0635, for grades 6–12.
- A programmable driving robot with onboard sensors, a rechargeable removable battery and expansion ports for add-on hardware.
- Coded through the Sphero Edu app or its browser version, using drawing, blocks, JavaScript or Python.
Why it’s on the list: It’s the only pick designed squarely for middle and high school, so a 12-year-old is at the start of its range rather than the end. Kids can begin by drawing a path or stacking blocks and move to JavaScript or Python without changing robots, and the expansion ports leave room for bigger hardware projects later.
Keep in mind: Sphero sells RVR+ largely to schools, and its product page can default to classroom packs, so select the single-robot option and confirm the price before ordering. It replaces the original Sphero RVR that earlier versions of this guide recommended; look for the RVR+ name and SKU 940-0635. Coding needs a phone, tablet or computer, so it isn’t a screen-free toy.
How to choose
- Curious how electronics work, no screen wanted: Snap Circuits Pro SC-500.
- Wants to build a robot and learn to code it: Makeblock mBot2, especially for a child ready to try Python.
- Wants a robot that works straight away and lasts into high school: Sphero RVR+.
- Check the device first. Both robots need a phone, tablet or computer for coding. Confirm your family’s device is supported before you buy.
- Treat ages as a guide. A maker’s age or grade band is a starting point, not a promise that every child will use a product without help.
We’ve kept this list short on purpose. Three picks that teach different things are more useful than a longer list of similar kits.
More STEM gift guides
- Robotics kits for middle school students
- Best coding toys for kids
- Best STEM toys for 8-year-olds, for a younger or newer builder
Last update on 2026-11-13 / Affiliate links / Images from Amazon Product Advertising API
