Budding architects can build even bigger with our 24-piece set – a perfect complement to our best-selling 100 bricks set. Weighted and measured the same as our standard bricks, this extension set includes more units and half units for building on those STEM-based foundations. Can also be used as a starter set for children newer to block play. Each 24 piece set includes: 10 Half Units, 10 Units, 2 One-and-a-half Units, 2 Double Units. Built to the scale recommended by childcare expert Caroline Pratt, our standard Unit Bricks measure 140x70x35mm. Beautiful and built to last heirloom quality Hand-carved textured wood is tactile and weighted to suit children’s developmental and cognitive needs Develops fine motor skills, enables practice in small and large gross motor skills Encourages design, creativity, planning and big thinking Suited to solo or collaborative building Fits with your home or school’s existing block collections Natural appearance mimics real life bricks 18 months +