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Loki Lowe, 5, right, and his mother, Carrie Wilks, work Tuesday on coloring a map of North America during Walnut Farms Montessori School’s annual Discovery Night in Bentonville. The open-house event gaves parents a chance to experience the lessons their children are learning in classrooms. Established in 1991, Walnut Farms Montessori School has an enrollment of 120 students from toddlers to sixth-graders.