The Land and Water Form Trays Set 1 (SKU: G 230) is the foundational set in the landform series, introducing children to the four primary land and water relationships — island and lake, cape and bay, strait and isthmus — through direct sensorial exploration with water. Typically presented in the primary environment around ages 4–6, these trays ground abstract geographic vocabulary in a concrete, repeatable experience before moving to card and label work. This set is an essential anchor for any complete geography shelf and holds up well to the repeated water work that makes the lesson so effective.