TI 15 Explorer Calculator. The most popular fraction calculator with 2-line display which shows entries and results at the same time. The most popular fraction calculator with 2-line display which shows entries and results at the same time- Shows entries and results at the same time with two line display and allows students to scroll up or down to review previous entries and results- Allows students to develop computational skills using operations and changing the level of difficulty while keeping score of the right and wrong answers- See how many 1s 10s 100s 1000s or even 10ths and 100ths are in a specified number- Work with fraction in stacked fraction format so that students will see consistency when using textbooks and worksheets- Display answers in decimal fraction and percent formats- Ideal for introducing the relationship between stacked fractions decimals and percents- Features include problem solving place value integer division and 2-line display- Ideal for grades 3-6.