STEM & Coding Toys

STEM toys build science, technology, engineering and maths skills through play. This collection lists more than 1,500 in-stock toys that are sold as STEM toys, most between £35 and £67.

What's in the collection

• Magnetic tiles and blocks – over 600 sets, including PicassoTiles, for open-ended building from age 3. See also Magnetic Tiles & Blocks.
• Building and engineering kits – construction sets, motorised models and gear kits.
• Coding robots – around 120 robot and coding kits, such as Makeblock mBot, for ages 8–12 and beyond.
• Science kits – experiments, crystal growing and chemistry sets.
• Marble runs – more than 60 track-building sets.
• Circuits, microscopes and telescopes for older explorers.

Choosing by age

Ages 3–5: magnetic tiles, chunky blocks and simple marble runs. Ages 6–8: science kits and motorised builds. Ages 8–12+: coding robots, circuit kits and advanced engineering sets. The age range is shown in most product titles.

For more, browse Learning & Education and Building & Construction Toys.

Frequently asked questions

What does STEM stand for?

Science, Technology, Engineering and Maths. STEM toys encourage children to build, experiment and solve problems.

Which coding robot is best for beginners?

Look for screen-free or block-based (Scratch-style) robots for ages 6–8, and Arduino- or Python-ready kits for ages 10 and over.

Are magnetic tiles safe?

The magnetic tile sets here enclose their magnets inside the tiles. Do not let children play with damaged tiles, and follow the age guidance on each listing.