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• Math flash cards to remove common misconceptions and build a strong foundation
• Help recall important and basic concepts of math with pictorial representation on one side and definitions on the other
• Used by leading elementary schools， primary schools and homeschooling parents for kids' math learning and education
• Unique thumb lock design helps kids hold better and in proper direction
• Perfect for kids in 4th grade. It addresses skills from grade 4 with slight overlap of grade 3 skills too for continuity