TI-15 Elementary Calculators

Blue Texas Instruments TI-15 Explorer Elementary Calculators. These are in very good working condition from smoke free home. They cost around $25 each new; asking $10 each or $75 if you want the set. There's a model guide for teachers as well as a quick reference guide available on the Texas Instruments website. All have covers but only some have the quick guide reference card inside the covers.