This award winning series helps students to build confidence in their ability to "do math" and develop the knowledge and skills required to become mathematically literate. In this lesson a calculator is used to perform arithmetic operations with whole numbers, fractions, and decimals. With the standard calculator a whole-number division yields a decimal answer if there is a remainder, and fraction problems also yield decimal answers. The TI-12 Explorer calculator is introduced. This calculator allows the student to obtain the answer to a whole number division problem in quotient/remainder format. This device also provides fractional answers to fraction problems. The calculator can then convert these answers to simplest terms. Students will learn to "Add & Subtract" and "Multiply & Divide" fractions using a calculator. Plus "Add & Subtract" and "Multiply & Divide" decimals using a calculator.