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There is no single best STEM education platform for every learner. For ages 2–8, Khan Academy Kids offers free early-learning activities; Brilliant focuses on interactive math and STEM problem solving; Tynker teaches coding through creative projects and sequenced courses; and Code.org provides free, structured K–12 computer science and AI curricula. Choose by age, subject, learning style, classroom needs, and device access—not by treating these different services as a tested ranking.
How to choose a STEM learning platform
Start with what the learner needs to do. A young child building early math foundations needs a different experience from a student practicing math problems, making a game, or following a teacher-led computer science course.
- Age or grade: Khan Academy Kids specifies ages 2–8. Code.org and Tynker offer grade-banded pathways; Tynker’s family page lists pathways for ages 7–12 and 13+.
- Learning mode: Options include video and article instruction, interactive problem solving, creative coding projects, and structured courses that teachers can assign.
- Subject: The choices range from early literacy and math to deeper math practice, coding, computer science, and AI.
- Setting: For independent or family use, look at the learner-facing activities and plan limits. For a classroom, check whether teachers can assign work, assess progress, and access reporting or professional learning.
- Cost and equipment: Check which access is free, what requires a paid plan or school offering, and whether a course needs a computer or physical hardware.
The platforms below serve different purposes. Their official pages describe features and access, but do not establish that one produces better learning outcomes than another.
Best STEM platforms by learner and use
Khan Academy Kids: best fit for early learners ages 2–8
Khan Academy Kids is an app for children ages 2–8, with games, books, and lessons in early literacy, math, and social-emotional skills. Khan Academy says its app is free for families and teachers, with no subscription, ads, or in-app purchases. It reports 4,000+ activities, videos, and books on its current page; that is a platform-reported catalog count, not an independent measure of learning outcomes. See Khan Academy Kids.
#1 Best Overall
- 6 IN 1 STEM KITS: These science experiments contain a reptile robot, a balance car, a bubble machine, a fiber lamp and a buzzer wire game kit. Kids will be proud of building their own robot. REQUIRES (NOT INCLUDED): BUBBLE SOLUTION, AA BATTERIES
- FAMILY BONDING TIME: Doing scientific experiments together is a good way for parents and children to build a great family relationship. Complete science projects with your kids as their friend and teacher, that’ll be an unforgettable and precious time
- UNIQUE GIFT IDEA: Our DIY robotic kits designed for kids age 8-12 are cool stuff for a budding inventor, very suitable for elementary students to show their talents in a science fair. Packaged in a beautiful gift box, these assembled electronic gadgets are perfect gifts for boys and girls for birthdays and Christmas
- LEARN BY PLAYING: Encourage your kids to build their own robots and enjoy DIY science activities. By playing with these electric robots, children's curiosity and interest in physics will be stimulated, and they'll know how much fun it is to create a circuit by themselves
- EASY TO ASSEMBLE: All components of the STEM kits are made with odorless and safety materials. Mini screwdriver and detailed step-by-step instruction manuals make it easier and more convenient to assemble the model
Individual teachers can create a free account and use classroom features. Schools and districts have a separate offer listed at $5 per student per year. Publicly funded PreK programs can access that school offering at no cost for school years 2026–27 and 2027–28; confirm eligibility and current terms with Khan Academy. The school layer is distinct from the free family and teacher app and includes reporting, assessments, professional learning, and implementation support.
Brilliant: best fit for interactive math and STEM problem solving
Brilliant emphasizes visual interactives, guided problem solving, independent practice, and review. Its deepest focus is math and coding, with data science and broader STEM also represented. This approach suits learners who want to manipulate ideas and work through problems rather than mainly watch lessons or read articles. That description reflects Brilliant’s own account of its teaching model, not independent evidence of superior results.
Rank #2
- Super Value 6 Set STEM Kits: These kids science experiments project activities contain 6 separate robot to build: reptile robot, a balance car, a bubble machine, a fiber lamp and sliding plane. Kids will be proud of building their own robot and experimenting with different designs. Great educational STEM toys for kids age 8-12, engineering building robotics kit set for kids boys and girls ages 8-12, Christmas Birthday gifts for 8 9 10 12 year old boys and girls
- Science Experiments Robotics Kits: Our learning & educational STEM building toys for kids is a perfect hand-on steam kits toys for 8-12 year old, encourage your kids to build their own robots and improve creative abilities, children's Science, Technology, Engineering through robot building. Great stem activities kit toys for 8 9 10+ 12+ years old boys and girls, stem science kits for kids age 8-12 12-14, Electronic motor craft for 8 9 10 12 Year Old boys and girls
- Learning Toy for Family Bonding Time: Doing scientific experiments activities for kids 8-12 together is a good way for parents and children to build a great family relationship. Let your kids learn how to read instruction and learn how to work together. Fun stem boy toys for 8 9 10 12 year old, coolest kids science kits age 8-12 12-14, Boys craft educational STEM toys gifts for birthday and christmas
- Great Birthday Christmas Gift For Boys & Kids: Our electric robotics snap circuits kits for kids 8-12 packaged in a beautiful gift box designed, great birthday gifts presents for 8 9 10+ 12 year old boys girls. Great creative learning science games for kids classroom. Great stem project toys for 8 9 10 12 year old kids, Great Christmas gifts for kids age 8-12, Back-to-School gifts funny Stem Robot Kits for kids
- Safety Materials Kids Science Experiment Kits：Our Tsomtto kids building robot engineering STEM toys for boys 8-10 10-12 are non-toxic, 100% safe for playing. Screwdriver and detailed step-by-step instruction manuals make it easier and more convenient to assemble the model. Great stem project kits for kids 8-12, art and crafts for boys ages 8-12. Fun 8 9 10 12 yr old boy birthday gift Christmas stocking stuffers. Great 8 9 10 12 year old boy girl stem toys
Brilliant says it offers free access with daily limits, as well as Premium individual and family plans. The reviewed page does not state a price, so check the current terms before subscribing. Its comparison page contrasts its interactive approach with Khan Academy’s video-and-article instruction and wider academic coverage. See Brilliant’s comparison.
Tynker: best fit for children making coding projects
Tynker’s family curriculum describes six progression levels, from programming basics through real-world Python, with projects involving games, math, science, and data visualization. Its family pathways list ages 7–12 and 13+. The family free plan is limited to the first three lessons and excludes assessments and certification, according to Tynker’s curriculum page; verify current plan terms before relying on what is included. Explore Tynker’s family curriculum.
Rank #3
- 🎁Ideal Gift for Kids & Teens: Celebrate child’s growing skills and important milestones with this 5-in-1 Programmable robot set. Whether for birthdays, holidays, or achievements, it’s the perfect gift that encourages learning and hands-on fun—a gift that grows with them
- ✨STEM Educational Toys: The robot set for kids ages 8+ combines the fun of STEM learning. It encourages hands-on learning and early programming as they build, which can spark creativity and imagination and provide hours of screen-free play
- 📱Flexible Dual Control Modes: Control the Robotic kit with the intuitive app (Bluetooth) or remote. Enjoy fun features like basic programming, path, and precise movement, exploring endless interactive play
- 🔄 5-in-1 Buildable with Varying Difficulty: The Robot Kit with Progressive Difficulty! From simple robots to complex models, kids can build a robot, dinosaur, car, tank, and more. Adjustable head, arms, and tail allow for fun, playful poses. Perfect for kids 8-12 to develop skills step by step and ignite creativity
- 🛠️Clear & Detailed Build Instructions: This robot kit includes 488 pieces, with clear, colorful step-by-step instructions to make assembly easy. Kids can build their own robots independently or with family, enjoying quality time together and a confidence-boosting building experience
For schools, Tynker describes courses that begin with visual coding and progress toward text-based languages such as JavaScript. Its school program includes course-specific teacher tools for assignments, assessment, and progress tracking. Tynker reports alignment with CSTA, Common Core, NGSS, ISTE, some state standards, and UK national standards; it also describes College Board endorsement for AP Computer Science Principles and AP Computer Science A. Its school page reports more than 50 programming courses and more than 1,600 contact hours. These are vendor-reported curriculum details, not measured learning outcomes. See Tynker for schools.
Code.org: best fit for free, structured K–12 computer science
Code.org’s catalog includes free computer science and AI pathways across grade bands: elementary fundamentals, interdisciplinary connections, middle-grade courses, high-school courses, and physical computing. That structure can suit educators who want a sequence of courses, as well as families looking for introductory coding resources. Check the catalog for the learner’s grade and the current course options. Browse Code.org’s curriculum catalog.
Rank #4
- 6 SET OF SEPARATE STEM KIT: These science kits for kids age 8-12 contains 6 different individually packaged robot kit. Including bubble machine, doodling robot, balance robot, crawling robot, glider and air rocket. These stem building toys offers endless hours of fun and imagination of science
- LEARN BY PLAYING: Our stem kits for kids age 8-10 encourage kids to learn through play. This robotics kit is a perfect screen-time alternative that sparks creativity and imagination while honing problem solving skills! Engage your kids in learning, creating, and having fun completing electric motor kit through our fun and educational STEM activities
- FAMILY-FRIENDLY TIME: Create unforgettable memories and strengthen the family bond through exciting science experiments for kids 9-12. Join your kids as their friend and teacher as you complete this kids science kit together. It's an incredible opportunity to foster a love for learning while having a blast
- UNIQUE GIFT IDEA: Packaged in a beautiful gift box, these stem kits for kids ages 8-10 is perfect for birthdays, holidays, Christmas or any special occasion. These stem projects for kids ages 8-12 are also great for creative learning activities and science games for children's classrooms. Spark kids' curiosity and ignite their passion for science, technology, engineering, and mathematics
- EASY TO ASSEMBLE: Our robot toys are designed for kids aged 8-12, younger children may need help from their parents. Each project comes with a separate illustrated step-by-step instruction manual, ensuring a seamless experience for children to understand and successfully build all the craft kits. A great ideal for science fairs or simply unleashing their imagination
For high school, Code.org describes AP Computer Science A as a free intermediate course for grades 9–12. It requires a computer with a modern browser; Code.org says the curriculum is not optimized for tablets or mobile devices. Computer Science Discoveries can be taught in units or as a full-year course and includes building websites, apps, animations, games, and physical-computing systems. Its course page recommends exploring AI Discoveries for the 2026–27 school year. Check current course information before planning a class. AP Computer Science A and Computer Science Discoveries.
At-a-glance comparison
| Platform | Best fit | Learning experience and subjects | Access and practical checks |
|---|---|---|---|
| Khan Academy Kids | Early learners ages 2–8 | Games, books, and lessons for early literacy, math, and social-emotional skills | Free family and teacher app; separate school and district offer. Confirm school eligibility and terms. |
| Brilliant | Learners who prefer solving interactive problems | Visual interactives and guided problem solving, especially in math and coding; also data science and broader STEM | Free access with daily limits; Premium individual and family plans. Price not stated on the reviewed page; check current terms. |
| Tynker | Children making coding projects; schools seeking sequenced coding courses | Progression from visual coding toward languages such as JavaScript and Python; projects include games, math, science, and data visualization | Family free plan limited to the first three lessons and excludes assessments and certification, according to its curriculum page. School tools include assignments, assessment, and progress tracking. |
| Code.org | Educators seeking structured K–12 computer science; families seeking introductory coding | Grade-banded computer science and AI courses, including physical computing | Core curriculum described as free. Some courses need a computer with a modern browser; physical-computing lessons may need hardware. |
What students need for physical computing
Most of the options above include learning that does not require a separate board or kit. For hands-on physical computing, Code.org’s grades 3–12 maker pathway uses micro:bit or Circuit Playground hardware; students program hardware inputs and outputs. The curriculum’s hardware reference does not specify a board generation, package contents, price, or a particular compatible kit, so check the course materials and hardware requirements before buying. See Code.org’s maker curriculum.
Best Value
- BUILD, CODE & DRIVE YOUR OWN ROBOT CAR: Turn coding, electronics and engineering into a working programmable robot car you can assemble, program and drive; ideal for weekend family projects, STEM classrooms, coding clubs, robotics lessons and maker challenges
- EXPLORE FPV, LINE TRACKING & OBSTACLE AVOIDANCE: Control the robot with the ELEGOO app or IR remote, view live FPV video through the onboard camera, follow black lines, avoid obstacles with the ultrasonic sensor and explore multiple interactive driving modes
- BEGINNER-FRIENDLY BUILD WITH GUIDED WIRING: Keyed XH2.54 connectors help reduce wiring mistakes, while the illustrated tutorial and example programs guide beginners step by step from chassis assembly and module connection to programming and the first successful run
- GO BEYOND ASSEMBLY WITH CREATIVE CODING: Program with Arduino IDE to explore movement, sensors and control logic, then modify example code to create custom routes, reactions and robotics experiments that develop coding, problem-solving and engineering skills
- COMPLETE RECHARGEABLE STEM ROBOTICS KIT: Includes an ELEGOO UNO R3 controller board, ESP32-WROVER-based camera and Wi-Fi module, line-tracking and ultrasonic sensors, motors, IR remote and a 2000 mAh rechargeable lithium-ion battery; recommended for ages 8+ with adult guidance for first-time builders
Which platform should you choose?
- Choose Khan Academy Kids for a young child who needs early literacy and math activities in a free app.
- Choose Brilliant if the learner is drawn to interactive math and STEM problem solving and accepts daily limits on free access.
- Choose Tynker for coding projects and a progression from visual programming toward text-based languages; check the limited family free tier or school tools, depending on the setting.
- Choose Code.org when grade-banded computer science or AI courses, including a school curriculum, are the priority. Check the specific course’s device and hardware requirements.
These are fit-based choices, not a ranking by independently measured effectiveness. Compare the actual course or age pathway with the learner’s needs and verify changing access terms before committing.
Quick Recap
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