User rating, 4.8 out of 5 stars with 2852 reviews. Shop Texas Instruments Scientific Calculator at Best Buy. Find low everyday prices and buy online for delivery or in-store pick-up. Portable & Gadgets Texas Instruments TI-30X IIS 2-Line Scientific Calculator, Black Color: Black. 1,132. 200+ bought in past month. $1794. FREE delivery Jan 25 - 31. Or fastest delivery Jan 22 - 24. More Buying Choices. $7.50 (27 used & new offers) Sep 30, 2011 · WYNGS Protective Case for Texas Instruments TI-30XA / TI-30XIIS / Casio FX-300ES Plus 2 / Casio FX-991ES Plus 2 / Casio FX-115ES Plus 2 Scientific Calculator in Pink $11.95 $ 11 . 95 Get it as soon as Tuesday, Sep 26 Aug 20, 2016 · Page of Start over. Texas Instruments TI-30XIIS Scientific Calculator, Black with Blue Accents. 4.7 out of 5 stars. 42,641. #1 Best Seller. in Scientific Calculators. 128 offers from $6.17. Texas Instruments TI-30X IIS 2-Line Scientific Calculator, Lavender. 4.8 out of 5 stars. There is a required calculator for Math 120, 124, 125 and 126. It is the Texas Instruments TI-30X IIS which can be purchased from many places for well under $20. The UW Bookstore carries orange ones, which they will buy back at the end of quarters, but any color is acceptable for Math 120, 124, 125 and 126.Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea...Aug 8, 2018 · The Texas Instruments TI-30X IIS Calculator combines statistics and advanced scientific functions into one attractive package. Durable, it is suitable for use in the classroom, home or office. The two-line display helps students explore math and science concepts in the classroom. Scientific Calculator. eCalc is a free and easy-to-use online scientific calculator that supports and resembles a ti-30 with many advanced features, including unit conversion, equation solving, square roots, EE functions, and even complex-number math. eCalc is offered as both a free online calculator and as a downloadable calculator. 0 0.TI-30XIIS reference guidebook by Texas Instruments The TI 30X Pro MathPrint and the TI 36X PRO are both great calculators for the FE and PE exams. Both calculators have the same buttons and functions. The 30X PRO MathPrint is slightly faster and will factor out squareroots. The 30X Pro MathPrint had a better look and feel in my opinion. Unfortunately the 30X PRO MathPrint is only available ...The Texas Instruments TI-30XIIS is a pocket-sized scientific calculator. It features a plastic housing and utilizes button controls. With a total of 45 keys, this calculator provides convenient access to a range of mathematical functions. Its 11-digit display is presented on a LCD screen and does not offer tilting capabilities. Feature Category. Subcategory. fx-CG50 PRIZM. TI-84 Plus CE. fx-9750GIII. TI-84 Plus. Hardware. Dot Matrix Display. 384 x 216. Description. Get your teen ready for high-level math and science with a Texas Instruments TI-30XS Multiview Scientific Calculator. This Texas Instruments calculator is ideal for high school students for general math, algebra, statistics, geometry, chemistry and more. It shows 4 lines in the display for comparing complex calculations. Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea...The TI-30X IIS Calculator Is one of the most commonly used calculators i... In this week's video, I point out some useful features of the TI-30X IIS Calculator. SATTI-30X IIS tutorial. Today we will find factors of a number using the TI-30XS MultiView calculator. To find factors of a number such as 81 or 16 or any other number with the help of a TI-30XS calculator we'll use the table function. We need to press ‘table’ on a calculator, then the number itself (i.e 81 in our case) divided by x.There were several versions of the TI 2500. My TI 2500 is in good working condition. Be sure to check out the history section of www.datamath.org for an excellent discussion of the development of the Datamath calculator and TI's two desktop calculators, the TI 3000 and TI 3500 introduced at the same time. Manual Cover, Datamath Box.Suppose you want the value y x. On most calculators, you enter the base, press the exponent key and enter the exponent. Here's an example: Enter 10, press the exponent key, then press 5 and enter. (10^5=) The calculator should display the number 100,000, because that's equal to 10 5. Before you start making a list of calculations, …The TI-30X IIS names most important part is the II which tells the user that it is a two-line calculator. Its 2 line display allows visually perfect entries. The Texas Instruments TI-30X IIS 2-Line Scientific Calculator features two-line display and other advanced features users get with the TI-30X IIS.Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea...This Texas Instruments TI-30X IIS scientific calculator is packed with a host of advanced features that make it great for high school math and science courses. The 2-line display lets you review and edit previous entries. It does fraction and decimal conversions, and changes improper fractions to mixed numbers. Texas instruments ti-30x iis calculator ti-30x iis scientificDownload free pdf for ti ti-30x iis calculator manual Ti-30x iis texas instruments scientific calculator $8.97 shipped30x iis fx casio manualslib calculadora. Texas Instruments TI-30X - IIS Scientific Calculator Support and Manuals. Check DetailsTexas Instruments TI-30X IIS Scientific Calculator, Blue. TEXAS INSTRUMENTS 30XIIS Scientific/Math Calculator - Orange. Scientific Calculator,w/Equation Recall ,3-1/5"x6-1/10"x3/4", Sold as 1 each. Add to Cart . Add to Cart . Add to Cart . Add to Cart . Add to Cart . Add to Cart . Customer Rating:Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea...Substitute this value to the formula for circumference: C = 2 × π × R = 2 × π × 14 = 87.9646 cm. You can also use it to find the area of a circle: A = π × R² = π × 14² = 615.752 cm². Finally, you can find the …Texas Instruments TI-30X IIS Scientific Calculator 10-Digit LCD Packaging may Vary ₱ 1,879.00 . American Cargo . 4.9 . Lazada . Texas Instruments TI-84 Plus Graphing Calculator Black (No Box and Manual) ₱ 9,888.00 . Arenade.ph . 4.9 . Lazada . Texas Instruments BA II Plus Financial Calculator ₱ 3,449.00 .It is ideal for general math, pre-algebra, algebra I and II, geometry, statistics and general science. The TI-30XIIS™ scientific calculator is approved for use on SAT®, ACT® and AP® exams. You can review previous entries and look for patterns. A two-line display shows entries on the top line and results on the bottom line. Best Sellers in Scientific Calculators. #1. Texas Instruments TI-30XIIS Scientific Calculator, Black with Blue Accents. 42,604. 130 offers from $6.17. #2. Texas Instruments TI-30XS MultiView Scientific Calculator. 32,681. 89 offers from $19.36.Texas Instruments TI-30XIIS Scientific Calculator. TWO-LINE DISPLAY . The TI 30X series is on the approved list by the National Council of Examiners for Engineering and Surveying, and it’s an affordable calculator with a simple two-line display showing the entry and result at the same time, making it easier to double-check for errors or ...Texas instruments calculator software simultaneous equation solver guidebook (28 pages) Calculator Texas Instruments TI-89 Manual Book. Texas instruments calculator software polynomial root finder guidebook (23 pages) Calculator Texas Instruments TI-89 Manual Book. Texas instruments calculator software cellsheet guidebook (87 pages) Calculator ...Portable & Gadgets Texas Instruments TI-30X IIS 2-Line Scientific Calculator, Black Color: Black. 1,054. 1K+ bought in past month. $1899. FREE delivery Thu, Aug 31 on $25 of items shipped by Amazon. More Buying Choices. $5.99 (46 used & new offers) Texas Instruments TI-30X IIS . Texas Instruments TI-30Xa . Texas Instruments TI-36X Pro ... In 2019, they released the TI-Nspire CX family of calculators, which have some updated functions from the previous …Introduction to the TI-30X IIS Calculator - YouTube 0:00 / 11:52 • Introduction Introduction to the TI-30X IIS Calculator Alane Tentoni 3.45K subscribers Subscribe Subscribed Share 25K...The Texas Instruments TI-30X IIS 2-Line Scientific Calculator features two-line display and other advanced features users get with the TI-30X IIS. The display shows the equation you are creating on the top line, and the numbers or symbols you are currently entering on the second line. Once the equation is solved, the results are displayed on ...Share. 77K views 5 years ago. In this video, I go through the basic functions of the Texas Instruments TI-30XIIS scientific calculator. This scientific calculator, which …Texas Instruments TI-30X IIS Scientific Calculator, Blue. Free shipping, arrives in 3+ days. $ 1789. Texas Instruments TI-30XA Student Scientific Calculator 10 Digits - Battery Powered - 6" x 3.1" x 0.8" - Black - 1 Each. Free shipping, arrives in 3+ days. $ 2325. Texas Instruments TI-30XS Scientific Calculator - 16 Digits - LCD - Battery/Solar ...Feb 16, 2013 · Texas Instruments TI-30X IIS Scientific Calculator . Menu for selection of settings appropriate to classroom and study needs, combining statistics and advanced scientific functions. Helps students explore math and science concepts. Shows entries on the top line and results on the bottom line. Entry line scrolling feature. This item: Casio fx-115ESPLUS2 2nd Edition, Advanced Scientific Calculator. $1699. +. SUPERMORE Anti-Fog Protective Safety Goggles Clear Lens Wide-Vision Adjustable Chemical Splash Eye Protection Soft Lightweight Eyewear. $999. +. VOGRYE Professional Lab Coat for Women Men Long Sleeve, White, Unisex. $1369. …Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea...Jun 26, 2023 · The TI-30XIIS™ scientific calculator is approved for use on SAT®, ACT® and AP® exams. You can review previous entries and look for patterns. A two-line display shows entries on the top line and results on the bottom line. Features one- and two-variable statistics, recognizes π as a symbol in radian mode, and provides menus that allow you ... Products Counting Devices Calculators S65241 Favorite item to keep tabs on it! Saved! Go to My Lists You have reached the limit of 350 favorited …Substitute this value to the formula for circumference: C = 2 × π × R = 2 × π × 14 = 87.9646 cm. You can also use it to find the area of a circle: A = π × R² = π × 14² = 615.752 cm². Finally, you can find the …The same TI page has user-guides for the software. For calculators that are not "TI" branded, but which are freely available and can be used without a 90 day limit, several options are available. NumWorks offers an Open Source calculator (Creative Commons license) with an emulator that can be used on computers or with a free app on …TI-30XS MultiView™ guidebook by Texas InstrumentsTexas instruments TI-30XIIS is a scientific calculator? Yes, the Texas Instruments TI-30X IIS, released in 2003, is a scientific calculator. It is an updated version of the TI-30 scientific calculator from 1976, which sold for $25.A quick tutorial on how to enter and use numbers in scientific notation on the Texas Instruments TI-30X iis Scientific Calculator.Contents:0:00 Intro0:15 But...Fixing a TI-30XIIS Scientific Calculator that won't turn on. The TI-30XIIS by Texas Instruments is a popular scientific calculator that is used in many classrooms. It offers a sufficient range of features and functions for most curriculums. However, like any electronic device, it can sometimes experience issues such as Fundamental two-line Texas Instruments TI-30XIIS calculator combines statistics and advanced scientific functions for high school math and science. Review previous entries and look for patterns. A two-line display shows entries on the top line and results on the bottom line. The same TI page has user-guides for the software. For calculators that are not "TI" branded, but which are freely available and can be used without a 90 day limit, several options are available. NumWorks offers an Open Source calculator (Creative Commons license) with an emulator that can be used on computers or with a free app on …Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea...The TI-30X IIS is a scientific calculator with trigonometric functions first introduced by Texas Instruments in 1993. It uses both a battery and a solar cell for power. 7 Questions View all . Scott Parkinson @scottparki24902. Rep: 1. Posted: Feb 29, 2016. Options. Permalink; History;Introduction to the TI-30X IIS Calculator – YouTube. Where is Mode button on TI 30X IIS? The TI-30X IIS has (3) numeric notation modes – FLO, SCI, and ENG. The mode settings can be accessed by pressing [2nd] [SCI/ENG]. The TI-30XS MultiView has (3) numeric notation modes – NORM, SCI, and ENG. The mode settings can be …Texas Instruments TI-30XIIS Scientific Calculator, Black with Blue Accents. 4.7 out of 5 stars. 42,641. #1 Best Seller. in Scientific Calculators. 128 offers from $6.17. Texas Instruments TI-30X IIS 2-Line Scientific Calculator, Lavender. 4.8 out of 5 stars.Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea...Texas Instruments TI-30X IIS Solar Scientific Calculator TI-30X IIS Solar Similar item to consider Amazon's Choice Amazon Basics LCD 8-Digit Desktop …Substitute this value to the formula for circumference: C = 2 × π × R = 2 × π × 14 = 87.9646 cm. You can also use it to find the area of a circle: A = π × R² = π × 14² = 615.752 cm². Finally, you can find the …Mar 9, 2015 · The TI-30X IIS and the TI-30XS have been around since the late 1990s. Below is a TI-30X IIS vs TI-30XS comparison. Have a look : TI 30XA Vs TI 30X IIS and TI-34 Vs TI-30XS. The TI-30X IIS name’s most important part is the II, which tells the user that it is a two-line calculator. Texas Instruments TI-30XIIS Scientific Calculator, Black with Blue Accents. 4.7 out of 5 stars 37,938. 100K+ bought in past month. $9.88 $ 9. 88. List: $21.95 $21.95. FREE delivery Wed, Aug 30 on $25 of items shipped by Amazon. More Buying Choices $5.99 (149 used & …TI 30X IIS, solar powered, two line display. First introduced in 1999 along with several other two line display calculators. ... TI E.T. Calculator, (1982) similar to the TI 1030, 1031, and similar Slimline TI calculators, this one sports an E.T., the Extra-Terrestrial, motiff based on the 1982 blockbuster Steven Spielberg motion picture. (See ...Example of how to enter a cubed root on the TI-30XIIS calculator.Watch this video to learn how to write fractions and improper fractions on the TI-30X IIS calculator.Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea...Texas Instruments TI-30X IIS Scientific Calculator . Menu for selection of settings appropriate to classroom and study needs, combining statistics and advanced scientific functions. Helps students explore math and science concepts. Shows entries on the top line and results on the bottom line. Entry line scrolling feature. It is ideal for general math, pre-algebra, algebra I and II, geometry, statistics and general science. The TI-30XIIS™ scientific calculator is approved for use on SAT®, ACT® and AP® exams. You can review previous entries and look for patterns. A two-line display shows entries on the top line and results on the bottom line. Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea...Only one problem, and thats the single most popular FE calculator is the TI-36 X Pro. Which, if it only had a parallel resistor button and a setting to use j for the imaginary number, would be the perfect calculator, graphers be damned. ... The TI 30X IIS is a powerhouse. I’ve had the same one for at least 9 years and it’s still getting me ...Substitute this value to the formula for circumference: C = 2 × π × R = 2 × π × 14 = 87.9646 cm. You can also use it to find the area of a circle: A = π × R² = π × 14² = 615.752 cm². Finally, you can find the …The TI 30X IIS and TI 30XS calculators offer unparalleled functionality, helping you breeze through complex calculations. Explore our selection and make your mathematical journey seamless with Texas Instruments – a brand synonymous with accuracy and innovation. Shop now to unlock a world of numerical possibilities. Graphing CalculatorThe TI-30X IIS scientific calculator is approved for use on SAT®, ACT®, and AP® exams. The TI-30XS Multiview Scientific Calculator is approved for GED Test. If you have any additional questions, we welcome you to contact MyTGTtech at 833-848-8324 every day, between 7 am-11 pm CST. submitted by. Rena - 6 months ago. Scientific Calculator. eCalc is a free and easy-to-use online scientific calculator that supports and resembles a ti-30 with many advanced features, including unit conversion, equation solving, square roots, EE functions, and even complex-number math. eCalc is offered as both a free online calculator and as a downloadable calculator. 0 0.Sep 19, 2022 · Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea... This video will show you through an example how to calculate a combination using your Texas Instrument TI 30X IISWhile both options have all the essential functionalities of a scientific calculator, the TI36X Pro is easier to use and has more handy features. What makes the 36X Pro even more attractive is that this model is still very affordable at around $20. TI 30X IIS. - Robust, professional grade scientific calculator.Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea...Aug 2, 2023 · To standardize calculator usage during U.S. Coast Guard mariner credentialing examinations, the National Maritime Center (NMC) is implementing the following: Beginning January 1, 2024, all mariners testing at a regional examination center, monitoring unit, or federal/state maritime academy will be issued a Texas Instruments TI-30XIIS calculator ... The TI 30X IIS and TI 30XS calculators offer unparalleled functionality, helping you breeze through complex calculations. Explore our selection and make your mathematical journey seamless with Texas Instruments – a brand synonymous with accuracy and innovation. Ever wonder how to use the TI 30XS or TI-30X IIS calculator to find the Factorial of a number (n!)? To see or buy this calculator on Amazon please click this...Apr 24, 2017 · The TI-30 is sold in three different models, including the TI-30Xa, the TI-30X IIS and the TI-30XS Multiview. The TI-30 calculator line is ideal for advanced scientific calculations, particularly if you are a student. All of the TI-30 calculators provide a function to calculate the natural log of whatever number you enter into the calculator. It compares the TI-30Xa, TI-30XIIS, TI-30XS Multiview, TI-34 Multiview and TI-36X Pro. All TI Scientific Calculators can be used on the AP, ACT and SAT Tests. All TI Scientific Calculators are SOLAR except for TI-30Xa which uses a battery. All TI Scientific Calculators have Multiview / 4 Display Lines except for TI-30Xa and TI-30XIIS. Texas Instruments TI-30X IIS . Texas Instruments TI-30Xa . Texas Instruments TI-36X Pro ... In 2019, they released the TI-Nspire CX family of calculators, which have some updated functions from the previous …Texas Instruments Texas Instruments TI-30XIIS 2 Line Scientific Calculator (4.7) 834 reviews $13.83 3.3 ¢/ea Price when purchased online Actual Color: Black Black $13.83 …Products Counting Devices Calculators S65241 Favorite item to keep tabs on it! Saved! Go to My Lists You have reached the limit of 350 favorited …TI-30XIIS Scientific Calculator. 4.7 out of 5 stars. 235. 200+ bought in past month. $21.98 $ 21. 98. FREE delivery Fri, Jan 26 on $35 of items shipped by Amazon. More Buying Choices $11.98 (10 used & new offers) Texas Instruments TI-30X IIS 2-Line Scientific Calculator, Dark Blue. 4.7 out of 5 stars. 735.Shop Texas Instruments TI-30XS Multiview Scientific Calculator at Target. Choose from Same Day Delivery, Drive Up or Order Pickup. Free standard shipping with $35 orders. ... Texas Instruments TI-30X IIS 2-Line 11-Digit Solar Powered Scientific Calculator Teacher Kit Black. 5 stars. 89 % 4 stars. 6 % 3 stars. 2 % 2 stars. 1 % 1 star. 3 % 4.8. 4 ...Example of how to enter a cubed root on the TI-30XIIS calculator.Sep 3, 2019 · About this item. Robust, professional grade scientific calculator. Logs and antilogs. It has 2-line display shows entry and calculated result at same time. Easily handles 1 and 2 variable statistical calculations and three angle modes (degrees, radians, and grads) and scientific and engineering notation modes. It has 1-year limited. First enter the numerator of the fraction, then press the division key and enter the denominator. Hit the "equals" key and the fraction will display as a decimal. If you can't convert decimals to a fraction directly on the calculator, but the calculator can help you do it with a pencil and paper. Suppose you want to express 0.7143 as a fraction.The same TI page has user-guides for the software. For calculators that are not "TI" branded, but which are freely available and can be used without a 90 day limit, several options are available. NumWorks offers an Open Source calculator (Creative Commons license) with an emulator that can be used on computers or with a free app on …Click File > Save Screen or click . In the dialog box: Navigate to the folder in which you want to store the screen image file. Select the file type for the appropriate image format. Type a file name. Use a name that describes the screen image. Click Save.Apr 24, 2017 · The TI-30 is sold in three different models, including the TI-30Xa, the TI-30X IIS and the TI-30XS Multiview. The TI-30 calculator line is ideal for advanced scientific calculations, particularly if you are a student. All of the TI-30 calculators provide a function to calculate the natural log of whatever number you enter into the calculator. TI-30XS MultiView™ guidebook by Texas Instruments
This Texas Instruments TI-30X IIS scientific calculator is packed with a host of advanced features that make it great for high school math and science courses. The 2-line display lets you review and edit previous entries. It does fraction and decimal conversions, and changes improper fractions to mixed numbers. . Sksy rwsy
The TI 30X IIS and TI 30XS calculators offer unparalleled functionality, helping you breeze through complex calculations. Explore our selection and make your mathematical journey seamless with Texas Instruments – a brand synonymous with accuracy and innovation. Feature Category. Subcategory. fx-CG50 PRIZM. TI-84 Plus CE. fx-9750GIII. TI-84 Plus. Hardware. Dot Matrix Display. 384 x 216. Aug 12, 2014. For a TI-30 calculator: Take for example the number 1.52 x 105. To type this number as it is in scientific notation, first type in 1.52. Next press the [2nd] key and then the key that has EE printed above it (it's the x-1 key). The EE means " x 10 to the power of". After you press the [EE] key, type in the exponent 5.Ideal for general math, pre-algebra, algebra I and II, geometry, statistics and general science. Exam acceptance - The TI-30X IIS scientific calculator is approved for use on …This Texas Instruments scientific calculator comes with an impact-resistant cover to defend against damage. Scientific calculator two-line LCD display: 10-digit answer & two-digit exponent line. Perfect choice for general math, statistics, pre-algebra, general science. Calculator works from solar cell and one CR2025 battery. The TI-30X IIS is a scientific calculator with trigonometric functions first introduced by Texas Instruments in 1993. It uses both a battery and a solar cell for power. 7 Questions View all . Scott Parkinson @scottparki24902. Rep: 1. Posted: Feb 29, 2016. Options. Permalink; History;TI-30 CALCULATOR ONLINE. Access the free TI-30 Calculator Online below. It runs on Windows Computers, Macs and Smart Phones too. Solve your Homework questions quickly in Math, Finance, Business, Statistics and Chemistry. This handy scientific calculator is great for fractions, Scientific and Engineering Notation, Trigonometric problems. instructions for the TI-30X IIS during class. Quik Start Calculator registers. Most keys have 2 functions. One appears in white on the face of the key. The second function appears in color above the key. To access the function appearing in gold, press [2nd] first. Arithmetic. Arithmetic can be done as shown below. Example: Multiply 1,222 by 32.8How to do Fractions on the TI 30x IIS Calculator. Convert a Fraction into a Decimal. Store a Fraction to use Later. Recall a Stored Fraction.00:01 How to Ent...Sep 19, 2022 · Don't have this calculator? Pick one up here: https://amzn.to/3H2HphDusing my Amazon affiliate link.*Disclaimer: Clicking this link and making a purchase mea... Watch this video to learn how to convert between mixed numbers and improper fractions on the TI-30X IIS calculator.Find the button with the letters "LN" written on top of it. The button is usually located in the upper left portion of the TI-30 calculator. Enter the number you want to calculate the natural log on the TI-30 calculator. Click the "LN" button on the calculator. The calculator will output a number which is the natural log of the number you entered.Texas Instruments TI-30XIIS Scientific Calculator - Blue. Texas Instruments. 4.8 out of 5 stars with 102 ratings. 102. $12.99. When purchased online. Texas Instruments TI-15 Explorer Elementary Calculator TI15. Texas Instruments. 5 out of 5 stars with 2 ratings. 2. $27.25. When purchased online..