By: Alesia Robinson

The History of the Calculator The very first calculator was the Abacus It was invented in Babylonia in 3000 BC It has wooden beds along a wire or thin wooden stick to represent numbers Also helps students with memorization

1642 Pascal 1885 Comptometer Dorr Felt 1946 Casio st graphing calculator st electronic desktop calculator 3000 BC Abacus st handheld Scientific calculator st program mable calculator th anniversary of Texas Instruments

Pascal & Dorr Felt

Casio & 1 st Graphing Calculator

1 st Electric Desktop Calculator & 1 st Handheld Scientific Calculator

1 st Programmable Calculator and Texas Instruments

Calculator Functions Stats Addition, Subtraction, Division, Multiplication ⁺⁻∕∙ Percentages % Square roots, 3 rd roots √ Pi Natural Logarithm, Natural Anti-Logarithm Recall Memory

Effects of Calculators on Students Positive effects on students who know basic math More fun, able to do more problems w/ less errors learn how to do more calculator functions Negative effects on students who do not know basic math become dependent on calculators

Area of Interaction Human Ingenuity- Why do we create things? The calculator was created to make mathematical functions easier. It was also created to do more functions with more numbers than the Abacus.

Bibliography Author not given. Timeline , (n.d.)Google, September 9, 2010 [ 8prmd=iv8tbs=ti] Author not given. Calculator Functions, (n.d.) Functions, September 9, 2010 [ Author not given. Calculators Okay In Math Class, If Students Know the Facts First, Study Finds,(8/20/09)Science Daily, September 10, 2010 [ 203.htm]

Bibliography Continued… Redin, James. A Brief History of Mechanical Calculators, (November 22, 2007) History of Calculators, September 8, 2010 [ Knight, Alex. Electronic Calculator History & Technology Museum, (n.d.) Classic Calculators, September 9, 2010 [ Image 01 Image 02 Image 03

Bibliography Continued… Image 04 & 05 Image 06 & 07 r r Image SDX.jpg 10SDX.jpg Image 09 Tarrant_Manufacturing_Company Tarrant_Manufacturing_Company

Bibliography Continued… Image 10 nstruments_graphing_calculators nstruments_graphing_calculators