Texas Instruments TI-15 Explorer Primary Calculator

• Encourage students in grades 3 - 6 to develop their problem-solving skills and begin connecting mathematic concepts with real-world situations

• Begin building the foundation for future maths success - The calculator can display two forms of fractional results simultaneously, allowing students to begin making crucial mathematic connections. Challenge them to manually simplify fractions and mixed numbers in traditional numerator/denominator format or enable the calculator to automatically simplify them or change them to decimal equivalents

• Engage students in self-directed problem solving - Encourage students to explore maths on their own with built-in flash cards that challenge their addition, subtraction, multiplication and division skills. Set the flash cards for the appropriate age and type of operation. The flash card functionality gives students hints when a wrong answer is entered and includes an internal scoreboard enabling teachers to check each student's progress

• Simplify fractions to lowest terms automatically or step-by-step

• Convert improper fractions, fractions, mixed numbers, decimals and percent

• Perform operations in M-D-A-S order

• View up to two entries and results simultaneously

• BUILT-IN FUNCTIONALITY

• Electronic flashcards 3 levels of difficulty using the 'level of difficulty' key

• Choose from + - x / or find the operation

• Calculator allows entry of a problem

• View hints with 'guess and check' feature

• Fractions displayed in stacked format

• Choose mixed number or improper fraction results

• Choose to simplify fractions to lowest terms automatically or step-by-step

• Display indicates when fraction needs to be simplified

• Conversions between improper fractions and mixed numbers

• Conversions between fractions, decimals and percent

• Calculator chooses or allows entry of a common factor

• View factor used to simplify

• View up to 2 entries and results simultaneously

• Review and edit previous entries

• View division results as quotients with remainders, fractions or decimals

• Two constant operations: show counters and results

• Negation key

• Powers and square root

• Symbolic pi

• Convert pi to decimal

• Clear last entry or all entries and settings

• Backspace and edit capabilities

• Compare numbers and equations including inequalities

• Place value: thousandths through thousands

• Round or fix to whole number or decimal places

• EOS Equation Operating System performs operations in M-D-A-S order

• Up to 23 levels of parenthesis

• Error recovery capabilities

• Allows memory retention of settings and previous entries

• HARDWARE

• Hard plastic, colour-coded keys

• Two-line, Eleven digits per line

• Battery and solar power

• Impact-resistant cover with quick reference card

• Teacher Kit available (includes 10 calculators, storage caddy, Teacher's Guide in English and Spanish, calculator poster and transparency)