Keva Brain Builders Deluxe — Challenge your builder’s brain with a hands‑on plank set that turns 2D puzzle cards into 3D constructions. This kit includes 75 precision planks, 40 double‑sided challenge cards (one side shows the 2D view, the reverse reveals the 3D solution) and 8 inspirational design cards with tips to spark creativity. Builds progress from easy to expert so players gain confidence through trial and error while developing spatial reasoning, fine motor skills, engineering thinking, strategy and basic physics concepts. No glue or connectors required — just balance, focus and imagination. Recommended for ages 7+.