{"product_id":"constructive-playthings-jumbo-school-unit-block-set-322-blocks","title":"Constructive Playthings Jumbo School Unit Block Set 322 Blocks","description":"\u003ch2\u003eStack, Build \u0026amp; Create with the Constructive Playthings Jumbo School Unit Block Set 322 Blocks – Precision-Made Kiln-Dried Hardwood Unit Blocks for Preschool, Kindergarten \u0026amp; STEM Learning Across North America\u003c\/h2\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe Constructive Playthings Jumbo School Unit Block Set is a 322-piece collection of precision-made hardwood unit blocks in 19 shapes, available now across North America at The Sensory Supply. Built for preschool classrooms, kindergartens, and early learning environments where blocks are a daily fixture, this is a set that takes the block corner seriously.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEvery block is straight-grained, kiln-dried hardwood with sanded, bevelled edges. The standard unit block measures 1-3\/8\" x 2-3\/4\" x 5-1\/2\" - and every other block in the set is a precise multiple or division of that single dimension. That proportionality is not a design detail - it is the entire pedagogical foundation of the unit block system. When children build with unit blocks, two halves equal one unit, two units equal a double unit, four units equal a quadruple. The geometry is built into every piece, and children absorb it through the physical experience of building without being taught it explicitly.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eConstructive Playthings stands behind this set with a quality guarantee: if any block breaks or splinters, it will be replaced at no charge.\u003c\/p\u003e\n\u003ch3 class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eWhat Is in the Jumbo School Unit Block Set\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e322 blocks across 19 distinct shapes:\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e106 Units\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e72 Double Units\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e22 Quadruple Units\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e24 Half Units\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e12 Pillars\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e4 Double Pillars\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e8 Large Triangles\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e16 Ramps\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e8 Large Cylinders\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e6 Small Cylinders\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e8 Big Building Boards\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e8 Roof Boards\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e2 Unit Arch\/Circle\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e8 Quarter Circle Arch\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e8 Quarter Circles\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e4 Arch\/Buttress (5 inches)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e2 Intersections\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e2 Side Road Blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eKey Features of the Constructive Playthings Jumbo School Unit Block Set\u003c\/h3\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003ePrecision-Made Straight-Grained Hardwood\u003c\/em\u003e - Every block is selected for straight grain, ensuring consistent density, weight, and durability across all 322 pieces - the kind of uniformity that makes building predictable and satisfying for young children learning to stack and balance\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eKiln-Dried for Stability\u003c\/em\u003e - Kiln-drying removes moisture from the wood before cutting, reducing warping and shrinkage so blocks remain true to their proportions through years of intensive classroom use\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eSanded and Bevelled Edges\u003c\/em\u003e - All edges are sanded smooth and bevelled for safe handling, protecting small hands during active building and making the blocks comfortable to grasp, carry, and stack\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eUnit Block Proportional System\u003c\/em\u003e - The standard unit (1-3\/8\" x 2-3\/4\" x 5-1\/2\") is the base measurement for the entire set; every other block is a mathematically precise multiple or division of this size, making the mathematical relationships between shapes discoverable through play\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003e19 Shapes for Complex Construction\u003c\/em\u003e - With units, doubles, quadruples, halves, pillars, triangles, ramps, cylinders, arches, roof boards, and road blocks, children have the vocabulary to build complex, architecturally varied structures rather than being limited by a narrow shape range\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003e322 Blocks for Large-Group Building\u003c\/em\u003e - The jumbo set contains enough pieces for multiple children to build simultaneously in a full classroom block centre, with sufficient volume for ambitious, large-scale constructions\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eQuality Guarantee Against Breaks or Splinters\u003c\/em\u003e - If any block in this set breaks or splinters, Constructive Playthings will replace it at no charge - a meaningful institutional commitment to the longevity of the investment\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eMade in the USA\u003c\/em\u003e - Designed and manufactured in the United States by Constructive Playthings, serving early childhood education since 1953\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSkills Children Develop Through Unit Block Play\u003c\/h3\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eSpatial Reasoning \u0026amp; Geometry\u003c\/em\u003e - Physically experiencing how two halves make one unit, how four units make a quadruple, and how ramps, arches, and cylinders create different structural forms builds the spatial reasoning foundation that research links directly to later mathematics achievement\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eFine Motor Skills\u003c\/em\u003e - Gripping, lifting, placing, and balancing blocks of varying sizes develops the hand strength, dexterity, and precision that transfers to writing, drawing, and daily self-care\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eGross Motor Coordination\u003c\/em\u003e - Reaching, carrying, and positioning larger blocks across the floor engages the whole body, building coordination and body awareness alongside cognitive engagement\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eTactile Discrimination\u003c\/em\u003e - The smooth, consistent texture of sanded hardwood provides satisfying tactile feedback that supports sensory exploration and the proprioceptive awareness developed through handling weighted objects\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eMathematical Thinking \u0026amp; Numeracy\u003c\/em\u003e - Counting blocks, comparing heights, and discovering the proportional relationships between shapes through building introduces number, measurement, and geometry concepts in a self-directed, embodied way\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eLanguage \u0026amp; Communication\u003c\/em\u003e - Describing structures, narrating building plans, negotiating roles, and talking through construction decisions with peers develops vocabulary, expressive language, and collaborative communication\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cem\u003eCreative Thinking \u0026amp; Problem-Solving\u003c\/em\u003e - Open-ended building with 322 blocks and 19 shapes generates genuine creative and structural challenges - how to span a gap, how to make a ramp stable, how to replicate a structure from memory - all of which develop flexible, persistent thinking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eIdea for\u003c\/h3\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eChildren aged 2 and up in home and institutional settings\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePreschools, kindergartens, daycares, Head Start programmes, and Montessori classrooms\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOccupational therapists and early childhood educators supporting fine motor, sensory, spatial, and cognitive development through construction play\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEducators following NAEYC, ECERS-3, or Head Start frameworks for block area provisioning\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFamilies investing in a long-lasting, professionally made hardwood block set\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNeurotypical and neurodiverse children of all abilities who benefit from the rich developmental context of open-ended block construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"cozy-video-gallery\" id=\"cozy-video-gallery12603\"\u003e\n\u003c!-- ALWAYS KEEP THIS EMPTY --\u003e\n\u003ch5\u003e\u003cspan\u003eSpecs\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eStandard unit size: 1-3\/8\" x 2-3\/4\" x 5-1\/2\"\u003c\/li\u003e\n\u003cli\u003eMaterial: Precision-made, straight-grained, kiln-dried hardwood\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Constructive Playthings","offers":[{"title":"Default Title","offer_id":45949355589882,"sku":"CP-U307","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/5885\/5162\/files\/constructive-playthings-unit-block-set-322-landscape.jpg?v=1779301777","url":"https:\/\/thesensorysupply.com\/en-us\/products\/constructive-playthings-jumbo-school-unit-block-set-322-blocks","provider":"The Sensory Supply","version":"1.0","type":"link"}