The Whitney Brothers 340-Piece Half Unit Block Set is the compact entry point into the Whitney Brothers full unit block range - 340 hardwood blocks in all 29 of the same shapes included in the Full Unit Set (WB0370), available across North America. For classrooms and childcare settings where 680 blocks and 369 lbs of material is more than the space, storage, or budget can accommodate, the Half Unit Set delivers the same complete shape vocabulary at half the scale and roughly half the cost.

The 29 shapes - including rectangles, squares, triangles, and arches - cover the full taxonomy of unit block construction. Children still have every shape they need to build bridges, towers, enclosures, ramps, and structurally complex free-form designs. The difference is quantity per shape, not variety of shape. A group of two to four children has ample material for ambitious collaborative building. For smaller groups or individual play, the Half Unit Set may actually be the more practical choice.

All blocks feature a smooth hardwood natural finish with rounded edges throughout. Slight variations in block size are a natural characteristic of the wood. The blocks cart is not included and is available separately.

GREENGUARD Gold Certified. 

Key Features of the Whitney Brothers 340-Piece Half Unit Block Set

• 340 Total Blocks Across 29 Different Shapes - All 29 shapes of the Full Unit Block range in a half-volume set, providing the complete unit block shape vocabulary at a scale suited to smaller classrooms, limited storage, and smaller groups.
• Same 29 Shapes as the Full Unit Set - Because this set contains the same 29 shapes as the 680-Piece Full Unit Set (WB0370), children working with the Half Unit Set learn exactly the same structural and creative vocabulary - with less repetition per shape.
• Hardwood Construction - Smooth Natural Finish - Blocks are constructed from hardwood with a smooth natural finish, providing the weight, durability, and tactile quality that makes unit block play genuinely rewarding across years of continuous use.
• Rounded Edges Throughout - Safe for All Users - All edges are rounded for safety, making these blocks safe for children of all ages and abilities.
• Very Slight Size Variations - Natural Wood Characteristic - Slight variations in block size are a natural characteristic of the material and do not affect structural stability during normal building play.
• Blocks Cart Not Included - The storage cart is not included in this set and is available separately from Whitney Brothers.
• GREENGUARD Gold Certified - Meets the most stringent indoor air quality certification for chemical emissions, appropriate for classrooms, childcare centres, and Early Learning environments.
• Ships Fully Assembled in 4 Boxes - 184 lbs Total - Ships fully assembled in 4 boxes with a combined weight of 184 lbs.

Skills and Benefits of the Whitney Brothers 340-Piece Half Unit Block Set

• Tactile Skills and Sensory Exploration - Handling, gripping, and feeling 29 different shapes in natural hardwood develops tactile discrimination, object recognition by touch, and the sense of weight, texture, and form central to sensory exploration.
• Gross Motor Skills - Grabbing, gripping, lifting, placing, and stacking blocks of various sizes and weights develops gross motor coordination and purposeful physical control.
• Fine Motor Skills and Hand-Eye Coordination - Precise block placement, balancing structures, and fitting shapes together develops fine motor coordination and hand-eye integration.
• Creativity and Imaginative Play - 340 blocks in 29 shapes supports open-ended imaginative construction with no prescribed outcome and no single correct way to play.
• Cognitive Development and Logical Thinking - Planning a structure, solving building problems, sequencing block placement, and predicting structural outcomes develops logical thinking, spatial reasoning, and executive function.
• Early STEM Learning - Comparing block sizes, exploring balance and gravity, understanding symmetry, and discovering that two half-unit blocks equal one full-unit block introduces early geometry, physics, and mathematical reasoning in concrete, hands-on form.
• Social Interaction and Collaborative Play - 340 blocks across 29 shapes comfortably supports two to four children building together, fostering communication, negotiation, turn-taking, and shared creative decision-making.

Ideal For

• Smaller early childhood classrooms and childcare centres where 680 blocks would exceed available storage or floor space
• Schools and institutions building a unit block program at a more accessible entry price point
• Settings where two to four children work at the block area at a time - the Half Unit Set is well-matched to smaller group sizes
• Libraries, therapy spaces, and community settings introducing unit block play for the first time
  

GreenGuard™ Gold certified.

• Dimensions: 95" W x 15" D x 35" H
• Weight: 199 lbs.
• Material: Hardwood
• Arrived in 5 Boxes.