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Stokes Publishing OH-450L Casio SL-450L Overhead CalculatorHome > Teachers > Overhead Calculators and Calculator Projectors > Casio Overhead Calculators > Stokes Publishing OH-450L Casio SL-450L Overhead Calculator | ||
 This four-function calculator displays the current operation
sign & has a floating negative sign in its eight-digit display.
With change sign, square root, percent and memory keys,
this calculator is an fine choice for primary mathematics.
Includes carrying case and instructions . |   Creative Mathematics Teaching with Calculators  | |
