Learning Resources Primary Science Set

The Oppenheim Toy Portfolio was founded in 1989 as the only independent consumer review of children's media. The organization does not charge entry fees or accept ads from manufacturers. Award-winning products are selected by a noted expert in child development, children's literature, and education, and further tested by an objective panel of kid judges. Judging criteria include kid-testers' responses along with expert assessment of educational and play value, safety, age appropriateness and other factors.