Science Kit Year 4-6 (45621-1) is a Educational and Dacta LEGO set released in 2025 with 336 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Educational and Dacta sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 6 minifigures and 87 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
2025
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Catalog scale
336 parts listed · 87 inventory lines tracked
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Minifigures
6 in this set's inventory — verify completeness when buying used
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Shipping weight (est.)
~697 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
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Minifigures in Science Kit Year 4-6
Parts in this set
87 parts · page 1 of 2 · updating…
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Activity Card 11 for Science Kits114342 · ×1 · [No Color/Any Color] -
Activity Card 16 for Science Kits114349 · ×1 · [No Color/Any Color]
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Animal Body Part, Clam / Scallop Half Shell with 4 Studs18970 · ×2 · White -
Bracket 1 x 2 - 2 x 244728 · ×4 · Light Bluish Gray -
Brick 1 x 1 with Simple Black Eye with White Pupil Print3005pr0003 · ×4 · Dark Turquoise -
Brick 1 x 1 with Simple Black Eye with White Pupil Print3005pr0003 · ×10 · White -
Brick 1 x 23004 · ×8 · Dark Blue -
Brick 1 x 2 without Bottom Tube3065 · ×2 · Trans-Yellow -
Brick 1 x 2 without Bottom Tube3065 · ×2 · Trans-Light Blue -
Brick 1 x 2 x 2 with Inside Stud Holder3245c · ×4 · Dark Turquoise -
Brick 1 x 43010 · ×4 · Coral -
Brick 1 x 63009 · ×4 · Bright Light Orange -
Brick 1 x 83008 · ×4 · Dark Turquoise -
Brick 2 x 23003 · ×4 · Dark Turquoise -
Brick 2 x 23003 · ×4 · Coral -
Brick 2 x 23003 · ×4 · White -
Brick 2 x 23003 · ×4 · Medium Nougat -
Brick 2 x 2 x 330145 · ×4 · Medium Nougat -
Brick 2 x 43001 · ×4 · White -
Brick 2 x 43001 · ×4 · Bright Light Orange -
Brick 2 x 43001 · ×4 · Dark Blue -
Brick 2 x 62456 · ×4 · Tan -
Brick 2 x 83007 · ×4 · Dark Blue -
Brick and Axle Separator v2.096874 · ×1 · Dark Turquoise -
Brick Curved 1 x 2 x 1 No Studs37352 · ×4 · Coral -
Brick Curved 1 x 2 x 1 No Studs37352 · ×4 · White -
Brick Curved 1 x 3 x 233243 · ×4 · Coral -
![Brick Curved 1 x 3 x 2 Inverted [Inside Bow]](https://cdn.rebrickable.com/media/parts/elements/6172370.jpg)
Brick Curved 1 x 3 x 2 Inverted [Inside Bow]18653 · ×4 · Bright Light Orange -
Brick Curved 2 x 36215 · ×4 · Bright Light Orange -
Brick Curved 4 x 1 Double with No Studs93273 · ×4 · Dark Turquoise -
Brick Curved 6 x 142022 · ×4 · Dark Turquoise -
Brick Curved Inverted 2 x 4 Double5174 · ×2 · Bright Light Orange -
Brick Curved Inverted 2 x 4 Double5174 · ×2 · White -
Brick Round 2 x 2 with Axle Hole3941 · ×2 · Trans-Light Blue -
Brick Round 2 x 2 with Axle Hole3941 · ×2 · Reddish Brown -
![Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]](https://cdn.rebrickable.com/media/parts/elements/4567449.jpg)
Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]85080 · ×8 · White -
Brick Round, Half 1 x 268013 · ×4 · Tan -
Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud Holder86876 · ×4 · Bright Light Orange -
Brick Special 1 x 2 with 2 Studs on 1 Side11211 · ×4 · Medium Nougat -
Brick Special 1 x 2 with Pin - Bottom Stud Holder44865 · ×4 · Light Bluish Gray -
Brick Special 2 x 2 with Photo Clip5252 · ×2 · Bright Light Orange -
Brick Special 2 x 4 with 3 Axle Holes39789 · ×4 · Dark Turquoise -
Brick Special 2 x 4, with 2 x 2 Brick with Top Pin and 1 x 2 Side Plates30592 · ×2 · Light Bluish Gray -
![Cone 1 x 1 [Top Groove]](https://cdn.rebrickable.com/media/parts/elements/4518400.jpg)
Cone 1 x 1 [Top Groove]59900 · ×6 · White -
![Cone 1 x 1 [Top Groove]](https://cdn.rebrickable.com/media/parts/elements/4567332.jpg)
Cone 1 x 1 [Top Groove]59900 · ×10 · Trans-Yellow -
![Cone 1 x 1 [Top Groove]](https://cdn.rebrickable.com/media/parts/elements/6482735.jpg)
Cone 1 x 1 [Top Groove]59900 · ×6 · Dark Turquoise -
Cone 1 x 1 Inverted with Bar at Bottom (Ice Cream Cone)11610 · ×6 · Tan -
Control Unit / Remote Control, Science115901 · ×1 · White