Fort Boards Red Prime Pack 90 Piece Fort Building Kit Build - this fort building kit includes 20 square feet of building boards for making large-scale forts, cars, robots, or nearly anything else. Stem - promotes learning and development of spatial reasoning, imagination and engineering skills. Imagine - open-ended building toy for active play and fostering creativity. Safe - recommended for ages 5 and up but safe for all ages. Made from highly durable, non-toxic materials for indoor or outdoor play. Includes - construction kit includes 44 boards (8x 8) and 46 connectors (for interlocking) and instructions. With the Connectors, boards can be locked into angles of 30, 60, 90, 180 degrees.<br> Fort Boards havebeenrecommended forPediatric Occupational Therapyas a way for kids to improve fine motor skills,hand strength and hand dexterity.<br> The Boards are 8 inches by 8 inches which allows kids to build structures that would be nearly impossible with smaller building toys.<br> Children learn STEM concepts through the forming of angles that are key to building a structurally sound fort or playhouse. With Fort Boards, kids can build their own unique worlds.<br> Accessbuild plans for cars, houses, submarines and castles.<br> A 44 board Prime Pack gives kids 20 sq ft of building space to work with!<br> The Fort Boards are great for building rigid roofs but you can add a sheet or blanket too to make a comfy blanket fort.