Arctic Animals Science Kit (45203-1) is a Learning at Home LEGO set released in 2026 with 1,134 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Learning at Home sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 4 minifigures and 376 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
2026
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Catalog scale
1,134 parts listed · 376 inventory lines tracked
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Minifigures
4 in this set's inventory — verify completeness when buying used
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Build manual
Digital booklet available on this page — use it to verify bag contents
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Build complexity
Large set — expect sticker sheets or multiple subassemblies; inspect photos closely
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Shipping weight (est.)
~2,100 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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Building instructions
4 official booklets — read on BrickID
Book 1 of 4 · US Letter Book 2 of 4 · US Letter Book 3 of 4 · US Letter Book 4 of 4 · US Letter
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Minifigures in Arctic Animals Science Kit
Parts in this set
376 parts · page 1 of 8 · updating…
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Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small53451 · ×2 · White -
![Arm Mechanical with Clip [Thick Support]](https://cdn.rebrickable.com/media/parts/elements/6401028.jpg)
Arm Mechanical with Clip [Thick Support]98313 · ×4 · Dark Tan -
Bar 2L with Stop in Center78258 · ×2 · Tan -
Bar 3L87994 · ×1 · Tan -
Bar 3L with Handle, Stop Ring and Side Stops (Minifig Ski Pole)90540 · ×2 · White -
Box / Crate with Handholds 3 x 4 x 1 2/330150 · ×1 · Light Bluish Gray -
Bracket 1 x 1 - 1 x 136841 · ×2 · Reddish Brown -
Bracket 1 x 1 - 1 x 136841 · ×2 · White -
Bracket 1 x 1 - 1 x 1 Inverted36840 · ×1 · Tan -
Bracket 1 x 1 - 1 x 1 Inverted36840 · ×2 · Medium Nougat -
Bracket 1 x 1 - 1 x 279389 · ×1 · White -
Bracket 1 x 1 - 1 x 279389 · ×4 · Tan -
Bracket 1 x 2 - 1 x 299781 · ×3 · White -
Bracket 1 x 2 - 1 x 299781 · ×1 · Reddish Brown -
Bracket 1 x 2 - 1 x 299781 · ×14 · Dark Bluish Gray -
Bracket 1 x 2 - 2 x 244728 · ×3 · White -
Bracket 1 x 2 - 2 x 244728 · ×1 · Light Bluish Gray -
Bracket 1 x 2 - 2 x 2 Inverted99207 · ×1 · Dark Turquoise -
Bracket 1 x 2 - 2 x 2 Inverted99207 · ×2 · White -
Bracket 2 x 2 with 1 x 2 Vertical Studs41682 · ×4 · White -
Brick 1 x 13005 · ×4 · Tan -
Brick 1 x 13005 · ×7 · Trans-Light Blue -
Brick 1 x 13005 · ×2 · White -
Brick 1 x 13005 · ×2 · Dark Blue -
Brick 1 x 126112 · ×2 · White -
Brick 1 x 23004 · ×5 · Dark Blue -
Brick 1 x 23004 · ×1 · White -
Brick 1 x 23004 · ×6 · Coral -
Brick 1 x 23004 · ×2 · Medium Nougat -
Brick 1 x 2 without Bottom Tube3065 · ×7 · Trans-Light Blue -
Brick 1 x 2 x 5 with Hollow Studs2454b · ×1 · White -
Brick 1 x 33622 · ×1 · Dark Blue -
Brick 1 x 33622 · ×7 · White -
Brick 1 x 43010 · ×2 · Dark Bluish Gray -
Brick 1 x 43010 · ×2 · Coral -
Brick 1 x 43010 · ×1 · Medium Nougat -
Brick 1 x 43010 · ×2 · Dark Turquoise -
Brick 1 x 43010 · ×4 · Dark Blue -
Brick 1 x 63009 · ×7 · White -
Brick 1 x 63009 · ×5 · Tan -
Brick 1 x 63009 · ×3 · Dark Blue -
Brick 1 x 83008 · ×1 · White -
Brick 2 x 103006 · ×2 · Tan -
Brick 2 x 23003 · ×4 · White -
Brick 2 x 23003 · ×2 · Medium Nougat -
Brick 2 x 33002 · ×4 · Yellow -
Brick 2 x 43001 · ×11 · White -
Brick 2 x 43001 · ×2 · Coral