Texas Instruments TI-15 Explorer Elementary Calculator w/Cover Solar Powered. Great tool for students in grades 3-6 to develop problem-solving skills and mathematic concepts. Has several different features including flash card mode! Specs from website below. Please see pictures.

Built-in functionality
Electronic flashcards: three levels of difficulty using the “level of difficulty” key
Choose from + - x ÷ or find the operation
Calculator allows entry of a problem
View hints with “guess and check” feature
Fractions displayed in stacked format
Choose mixed number or improper fraction results
Choose to simplify fractions to lowest terms automatically or step-by-step
Display indicates when fraction needs to be simplified
Conversions between improper fractions and mixed numbers
Conversions between fractions, decimals and percent
Calculator chooses or allows entry of a common factor
View factor used to simplify
View up to two entries and results simultaneously
Review and edit previous entries
View division results as quotients with remainders, fractions or decimals
Two constant operations: show counters and results
Negation key
Powers and square root
Symbolic π
Convert π to decimal
Clear last entry or all entries and settings
Backspace and edit capabilities
Compare numbers and equations including inequalities
Place value: thousandths through thousands
Round or fix to whole number or decimal places
EOS Equation Operating System performs operations in M-D-A-S order
Up to 23 levels of parenthesis
Error recovery capabilities
Allows memory retention of settings and previous entries