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The Educators Scientific Overhead Calculator |
Make math and scientific problems easier to understand. Place the calculators on the screen of your overhead projector and your students can follow as you press the keyboard and perform various functions. Model 65840-01 is our basic model and matches Texas Instruments TI-108. It features four functions plus automatic constants in each, percent, square root, and change sign keys, memory and clear. Model 65840-02 has more advanced features including functions to perform standard trig and log functions, scientific notation and reciprocals, universal powers and roots, logarithms, antilogarithms, pi, square, x2, sine, cos, tan, and 15 levels of parentheses. Our most advanced Model 45125-00 emulates the Texas Instruments TI-34. It calculates fractions and does statistical standard deviation. All calculators are solar powered, come in leatherette carrying cases and have 1 year warranties.
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