Firefly & Fern

Isidore Dressler, Edward P. Keenan

Ages 15–18problem-solvinglogical thinking

Ages 7–9skill-buildingfine motor development

Randall I. Charles, Branch-Boyd, Mark Illingworth, Darwin Mills, Andy Reeves

Ages 12–15mathematicsproblem-solving

A. Greer, A. Greer

Ages 12–15problem-solvingmathematical thinking

Randall I. Charles, Bonnie McNemar, Alma Ramirez

Ages 11–15problem-solvingmathematical thinking

Joyce Armstrong Carroll, Edward E. Wilson, Gary Forlini

Ages 12–15language skillswriting development

J. Richard Gentry

Ages 6–12language artsspelling mastery

Carson, Tom, Tom Carson, Ellyn Gillespie, Bill E. Jordan

Ages 14–18mathematical reasoningproblem-solving

academic foundation