Bricks and half bricks

Released in the early 1970s, the 516-1 set of Bricks and Half Bricks represents an foundational period in the history of the Lego Duplo line. Launched to cater to toddlers and preschoolers, the Duplo system was designed with larger dimensions than standard Lego bricks to ensure safety for young children while maintaining compatibility with the parent system. This specific set was intended as an expansion or starter pack, providing basic building blocks to encourage fine motor skill development and early spatial reasoning through tactile play.

The design of these blocks adheres to the characteristic primary color palette and robust, chunky aesthetic that defined early Duplo offerings. By utilizing a 2:1 scale ratio compared to standard bricks, the design team at Lego aimed to provide a seamless transition for children as they developed the dexterity required for more complex construction. The set was well-received as an essential educational tool, establishing the enduring modular philosophy that allows children to integrate these oversized pieces with the rest of their growing collections.