The TUKI BIG Magnetic Blocks Builder 150 is the largest BUILDER set in the TUKI BIG range. At 150 large 10cm foam blocks across 8 Signature shapes, recommended for 9-12 children, it is the only BUILDER set that serves a full half-class group - or the equivalent institutional cohort - with every participant maintaining personal block access from the first moment of the session to the last.

One hundred and fifty blocks divided among twelve children gives each approximately 12-13 blocks. At that per-child allocation, every child in the group builds an independent structure of meaningful architectural scale before the group combines. The combined floor build uses all 150 blocks simultaneously - a structure at 10cm cube scale that spans a significant area of room floor, reaches heights that make it visually dominant in the space, and functions as a physical environment that children move through, around, and within as a genuine piece of shared spatial construction.

The 9-12 child recommendation also marks the point in the BUILDER range where the question of BUILDER versus SMART becomes most pertinent. The SMART sets - beginning at 75 elements and scaling to 280 - are designed for high-traffic, open-ended institutional environments where many children cycle through a construction zone across a day without a defined group structure. The Builder 150 serves a different operational model: structured sessions with a defined group of 9-12 children, where every participant has personal block access, where the session has a beginning, a building phase, a combined-construction phase, and a pack-away, and where the educator or therapist is working with the whole group simultaneously. For settings where that session structure is the model, the Builder 150 is the right choice. For settings where dozens of children rotate through blocks in free play across a day, the SMART sets are the right model.

Key Features of the TUKI BIG Magnetic Blocks Set - Builder 150

• 150 Large 10cm Magnetic Foam Blocks - Recommended for 9-12 Children - The largest BUILDER set in the TUKI BIG range; 150 blocks for 9-12 children gives each participant approximately 12-13 blocks, maintaining the self-organising construction threshold across the widest child group available in the BUILDER range - enough for a full half-class with complete personal block access for every child
• 8 Signature TUKI Block Shapes - The full 8-shape vocabulary including cubes, beams in multiple variants, L-shapes, and triangles; the same complete shape set as all preceding large BUILDER sets, with the highest block count in the BUILDER range providing approximately 18-19 blocks per shape type across the full set
• 10cm x 10cm x 10cm Large-Format BIG Blocks - Each block is a full 10cm cube, twice the linear dimension of the Regular range and eight times the volume per block; floor-scale, both-hands, whole-body building blocks that develop gross motor planning, bilateral coordination, and proprioceptive body awareness
• Rotating Neodymium Magnet Capsules - Full-Angle Connectivity - Every face of every block attracts every other face in any orientation; no wrong connections, no failed placements; reliable magnetic connectivity across the highest-frequency group building sessions available in the BUILDER range
• Four Colours - Turquoise, Grey, Yellow and Pink - One hundred and fifty blocks across four colours provides approximately 37-38 blocks per colour - the highest per-colour block count in the BUILDER range, enabling the most deliberate and sustained colour-based construction of any BUILDER set
• Closed-Cell EVA Foam - Waterproof, Disinfectable and Floating - Made from closed-cell EVA foam that does not absorb water; blocks wipe clean or disinfect in seconds between sessions; rated for daily high-frequency institutional use across multiple large groups throughout the programme day
• EN71-Certified, BPA-Free and Non-Toxic - Certified to EN71-1, EN71-2, and EN71-3 European toy safety standards; BPA-free and non-toxic; independently safety-tested; appropriate for all regulated early years, therapy, special education, and institutional settings
• Storage Bag Included - The set includes a storage bag for institutional pack-away, room-to-room transport, and hygiene management between large-group sessions
• Compatible with All TUKI BIG BUILDER and SMART Sets - Every block is fully compatible with all other TUKI BIG products; a Builder 150 collection can be combined with any other BUILDER set for an even larger shared collection, or used alongside SMART sets in the same institutional environment
• Poland's Toy of the Year 2023 - Made in Poland - Awarded Poland's Toy of the Year 2023; manufactured in Poland to EN71 European standards

The Builder 150 as a Permanent Institutional Resource

Most BUILDER sets in the range are evaluated against a group size and a session structure. The Builder 150, at 150 blocks for 9-12 children, begins to function as something slightly different: a permanent institutional resource. Schools that buy the Builder 150 for a sensory room, an inclusive classroom construction corner, or a specialist STEAM space are typically buying it to stay there - not carried room-to-room for sessions but installed as a persistent feature of the environment that a succession of groups uses across the school year.

At 150 blocks the construction activity at the beginning of a session looks different from what it looks like at 43 or 56 blocks. With 43 blocks, a group builds and the result is impressive for the session but modest in overall scale. With 150 blocks, a group builds and the result is a floor structure that takes significant time to build, that changes the character of the room it occupies, and that - if left in place - becomes a feature of the environment that subsequent groups encounter, add to, and rework rather than simply starting from scratch.

Skills and Developmental Outcomes

• Collaborative Construction at Full Classroom Group Scale - Building with 9-12 children using a shared pool of 150 blocks generates the most complex, sustained, and socially rich collaborative floor construction in the BUILDER range; the group size creates natural sub-groups, distributed leadership, and multi-level social communication across the full session
• Gross Motor Planning, Bilateral Coordination and Core Strength - Lifting, carrying, and placing 10cm large-format foam blocks across an extended 9-12 child session develops bilateral coordination, motor planning, core stability, and whole-body spatial awareness at the highest group scale the BUILDER range provides
• Spatial Reasoning and 3D Engineering at the BUILDER Ceiling - Combining 8 Signature shapes across 150 blocks produces the most architecturally complex and spatially rich group floor constructions achievable in the BUILDER range; at this block count, group structures define rather than occupy the spaces they are built in
• Executive Function, Group Leadership and Multi-Cohort Coordination - Managing a 9-12 child build at 150-block scale requires the highest executive function load in the BUILDER range: sub-group formation, distributed leadership, multi-level planning, and the coordination demands of the largest group construction session available
• Proprioceptive Input from Sustained Large-Group Physical Building - Repeated lifting, carrying, and placing of 150 large-format EVA foam blocks across an extended large-group session provides the most sustained and widespread proprioceptive engagement of any BUILDER set - the physical demands are distributed across 12 participants simultaneously
• Physical Confidence and Embodied Spatial Agency - At 150 blocks the combined floor structure produced by a full group of 12 children defines the space in which they build; children move through, around, and within their own construction as a genuine physical environment, developing the spatial confidence and embodied agency that the largest BUILDER builds uniquely enable

Ideal for

• Schools and kindergartens installing a permanent construction resource in a sensory room, inclusive classroom construction corner, or specialist STEAM space for groups of 9-12 children
• Special education departments running full-cohort group construction programmes for 10-12 children simultaneously
• Large occupational therapy clinics and school-based OT programmes with cohort sizes of 9-12 children
• Sensory rooms sized for full large-group provision that need the highest BUILDER block count available
• Inclusion programmes where a 150-block permanent construction installation serves multiple successive groups across the school day
• High-traffic institutional playrooms - children's hospitals, rehabilitation centres, large childcare centres - where the maximum BUILDER provision is required
• Settings that own smaller BUILDER sets and have determined that the full BUILDER ceiling is needed for their programme

• Single block: 10×10×10 cm
• Set/packaging: 70 x 70 x 60 cm
• Weight: 35kg
• Colours: Turquoise, Grey, Yellow, Pink (approx equal distribution, approximately 37-38 blocks per colour)
• Magnet type: Neodymium magnets in waterproof rotating capsules
• Material: Closed-cell EVA foam, BPA-free, non-toxic