BRAIN QUEST Cards Sets. Each set contains 2 decks of cards. - Grade 2 (ages 7-8); - Grade 3 (ages 8-9); - Grade 4 (ages 9-10), - Grade 5 (ages 10-11). Like-new condition. Great for homeschooling or teaching in elementary school. $20 for all 4 sets. * Located in James Bay,