STEM Toys & Education Systems for Kids

Engino Discovering STEM Mechanics Set- Gears & Worm: Engineering Toys for Kids Ages 9+ (12 Models to Build)

Engino Discovering STEM Mechanics Set- Gears & Worm: Engineering Toys for Kids - Main image
$31.38 $42.99 In stock

Category: Constructors Toys and Games

Engino Discovering STEM Mechanics: Gears & Worm turns abstract mechanics into action. Young engineers explore gear ratio, force-speed trade-offs, bevel and crown gears, rack-and-pinion, and worm drives while building real working machines.

The booklet teaches how gears reduce or increase speed, change force, and transfer motion; it also shows how worm drives cut rotational speed dramatically and how screws turn rotation into powerful linear motion. 

Structured theory, hands-on experiments, and quizzes guide learning, from a carousel speed study to a helicopter gear-train investigation. Build guidance is available in print and online, with a 3D viewer for error-proof assembly. Designed for young engineers to master gears & worm drives through play.

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Eva ★★★★★

The rack-and-pinion models really make the mechanics click for my kid—he built three different setups in one afternoon and kept explaining the force-speed trade-off. It’s sturdy enough for learning, and the 12 builds give plenty of replay value.

Emma ★★★★★

My nephew is obsessed with the worm gear mechanism — he built a working crane in under an hour and kept explaining how the gear ratio lets it lift more weight. The 12 model options will keep him busy for weeks.

Timothy ★★★★★

My 10-year-old spent a whole rainy Saturday building the rack-and-pinion model and actually explained gear ratios to me at dinner. The pieces snap together tight, though a couple of the smaller pins needed a bit of force. Twelve models means it won't sit in the closet after a week.