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45521 LEGO Education Computer Science & AI Kit 3-5 thumbnail image

45521 LEGO Education Computer Science & AI Kit 3-5
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45521 LEGO Education Computer Science & AI Kit 3-5
  • Computer Science & AI Kit 3-5 thumbnail
  • Computer Science & AI Kit 3-5 thumbnail

LEGO 45521 Computer Science & AI Kit 3-5 is a Education set currently available at retail for $429.95.

Forecast Model

This represents the expected annual growth (CAGR) based solely on a forecast model.
LEGO 45521 Computer Science & AI Kit 3-5 is an Education set released in 2026, containing 321 pieces. Designed for grades 3–5, it includes interactive hardware such as a double motor, a color sensor, a connection card, and a USB charging cable, along with building instructions and a sturdy stackable storage box. Classroom bundles add six kits, two multi-chargers, a replacement pack of LEGO bricks, and curriculum materials covering six units: Basics, Events, Loops, Conditionals, Variables, and AI & Data.

Once retired, the expected annual growth will be close to 4% after the second year, valuing the set between $476 and $491 shortly after it is retired.

For Sale (New/Sealed)

 45521 Computer Science & AI Kit 3-5 $429.95

Computer Science & AI Sets

45520 Computer Science & AI Kit K-2

Theme / Subtheme Education / Science
Year 2026
Pieces / Minifigs 276 / 4
Availability Retail
45520 LEGO Education Computer Science & AI Kit K-2
Retail $339.95
Available at retail

45522 Computer Science & AI Kit 6-8

Theme / Subtheme Education / Science
Year 2026
Pieces / Minifigs 379 / 4
Availability Retail
45522 LEGO Education Computer Science & AI Kit 6-8
Retail $529.95
Available at retail

Sets in Education / Science

45203 Arctic Animals Science Kit

Theme / Subtheme Education / Science
Year 2026
Pieces / Minifigs 1,134 / 4
Availability Retail
45203 LEGO Education Arctic Animals Science Kit
Retail $99.99
Available at retail

45202 Mars Mission Science Kit

Theme / Subtheme Education / Science
Year 2026
Pieces / Minifigs 933 / 4
Availability Retail
45202 LEGO Education Mars Mission Science Kit
Retail $99.99
Available at retail

45200 Moon Mission Science Kit

Theme / Subtheme Education / Science
Year 2026
Pieces / Minifigs 519 / 2
Availability Retail
45200 LEGO Education Moon Mission Science Kit
Retail $49.99
Available at retail

45201 Antarctic Animals Science Kit

Theme / Subtheme Education / Science
Year 2026
Pieces / Minifigs 461 / 2
Availability Retail
45201 LEGO Education Antarctic Animals Science Kit
Retail $49.99
Available at retail

45622 Science Kit 6-8

Theme / Subtheme Education / Science
Year 2025
Pieces 424
Availability Retail
45622 LEGO Education Science Kit 6-8
Retail $499.95
Available at retail

45655 Replacement Pack for Middle School

Theme / Subtheme Education / Science
Year 2025
Pieces 381
Availability Retail
45655 LEGO Education Science Replacement Pack for Middle School
Retail $24.95
Available at retail

45654 Replacement Pack for Elementary School

Theme / Subtheme Education / Science
Year 2025
Pieces 350
Availability Retail
45654 LEGO Education Science Replacement Pack for Elementary School
Retail $24.95
Available at retail

45621 Science Kit 3-5

Theme / Subtheme Education / Science
Year 2025
Pieces 336
Availability Retail
45621 LEGO Education Science Kit 3-5
Retail $399.95
Available at retail

45620 Science Kit K-2

Theme / Subtheme Education / Science
Year 2025
Pieces 277
Availability Retail
45620 LEGO Education Science Kit K-2
Retail $329.95
Available at retail

45657 Connection Cards Pack

Theme / Subtheme Education / Science
Year 2025
Pieces 8
Availability Retail
45657 LEGO Education Science Connection Cards Pack
Retail $40.95
Available at retail

45623 Multi-charger

Theme / Subtheme Education / Science
Year 2025
Pieces 3
Availability Retail
45623 LEGO Education Science Multi-charger
Retail $139.95
Available at retail

45624 Multi-charger

Theme / Subtheme Education / Science
Year 2025
Pieces 1
Availability Retail
45624 LEGO Education Science Multi-charger
Retail $139.95
Available at retail

45650 Single Motor

Theme / Subtheme Education / Science
Year 2025
Pieces 1
Availability Retail
45650 LEGO Education Science Single Motor
Retail $149.95
Available at retail

45651 Double Motor

Theme / Subtheme Education / Science
Year 2025
Pieces 1
Availability Retail
45651 LEGO Education Science Double Motor
Retail $179.95
Available at retail

45652 Education Controller

Theme / Subtheme Education / Science
Year 2025
Pieces 1
Availability Retail
45652 LEGO Science Education Controller
Retail $99.95
Available at retail

45653 Color Sensor

Theme / Subtheme Education / Science
Year 2025
Pieces 1
Availability Retail
45653 LEGO Education Science Color Sensor
Retail $89.95
Available at retail

My Collection

Computer Science & AI Kit 3-5 Reviews

11 reviews
4.7
Collectors
Investors
BrickEconomy Expert Review
“The Computer Science and AI platform drops the traditional hub-focused setup and instead centers on coding, shared builds, and a more classroom-driven structure. The models themselves are fairly simple, but the color-coded instructions and wide range of guided projects make the building process feel organized and genuinely collaborative. While the hardware is less advanced than earlier robotics systems, the software and lesson support tie everything together into a more practical teaching tool.”
 

About Education Science

The LEGO Education Computer Science & AI subtheme is a 2026 classroom-ready, standards-aligned learning line that introduces students to computer science and artificial intelligence through hands-on LEGO building paired with the block-based LEGO Education Coding Canvas. The line launched with three grade-band kits shipping in April 2026: 45520 for grades K-2, 45521 for grades 3-5, and 45522 for grades 6-8. The grade 6-8 kit contains 379 bricks along with interactive hardware including a double motor, single motor, color sensor, controller, connection cards, a USB charging cable, and a stackable storage box. Designed for groups of four students, kits are sold standalone or as larger classroom bundles.

Science was introduced in 2025 and currently consists of 19 sets.
Read more
Classroom-ready, standards-aligned Computer Science & AI kits for grades 3-5, designed to drive outcomes through hands-on learning.

321 LEGO® bricks, providing limitless hands-on possibilities
Building instructions
Interactive hardware
1 double motor
1 color sensor
1 connection card
1 USB charging cable
Sturdy stackable box

Classroom bundles include 6 kits along with:
2 multi-chargers
1 replacement pack of LEGO® bricks
4 lessons + 1 design challenge per unit with built-in progression

Teacher Portal
Six units:
Basics
Events
Loops
Conditionals
Variables
AI & Data
Student-facing lesson presentations
Teacher facilitation notes
Getting-started materials
Teacher support

Safe AI learning
Develops students’ AI literacy skills
Safe, meaningful and creative experiences
Supports AI learning progression
AI-based computer vision features
AI possibilities and challenges presented in an age-appropriate way
Everything saved locally—no login or sharing of student data

LEGO® Education...
Description provided by LEGO©