--- title: "Math & Calculators Articles: Tutorials & Guides | ShoutingNow" description: "Graphing calculators, math tools, and exam prep for students: TI-84 guides, percentage and conversion help, and step-by-step math tutorials." url: "https://shoutingnow.com/blog/category/education/math-calculators/" image: "https://shoutingnow.com/wp-content/uploads/2026/07/shoutingnow-preview-scaled.webp" --- # Math & Calculators Graphing calculators, math tools, and exam prep for students. Open any card to start calculating instantly, then explore related converters and guides for the full workflow. ## Items - [Newton vs Pound-Force: Understanding Force Measurement Units](https://shoutingnow.com/blog/newton-vs-pound-force/) Learn the difference between newtons and pound-force, how to convert force units, common applications, and when each measurement is used in engineering. - [Engineering Unit Conversion Reference: Length, Force, Power & Pressure](https://shoutingnow.com/blog/engineering-unit-conversion-reference/) A practical engineering unit conversion reference covering length, force, pressure, temperature, power, energy, torque, and other common engineering units. - [Swimming Time Conversions: Splits, Pace & Course Times](https://shoutingnow.com/blog/swimming-time-conversions/) Learn how swimming time conversions work, compare race times, convert pool distances, understand split times, and improve swim performance across courses. - [Acre vs Hectare: Understanding Land Measurement Units](https://shoutingnow.com/blog/acre-vs-hectare/) Learn the difference between acres and hectares, how to convert between them, where each unit is used, and common land measurement mistakes to avoid. - [Construction Measurement Tips for Accurate Building Projects](https://shoutingnow.com/blog/construction-measurement-tips/) Learn practical construction measurement tips, how to use a tape measure and framing square, common mistakes, and best practices for accurate building work. - [Horsepower to Kilowatts: Complete Power Conversion Guide](https://shoutingnow.com/blog/horsepower-to-kilowatts/) Learn how to convert horsepower to kilowatts, understand engine and EV motor power ratings, compare HP vs kW, and avoid common conversion mistakes. - [Understanding Pressure Units: PSI, Bar, kPa, MPa and More](https://shoutingnow.com/blog/understanding-pressure-units/) Learn about pressure units including PSI, bar, kPa, MPa, atm, and Pa. Compare pressure measurements used in tires, industry, engineering, and science. - [Common Unit Conversion Mistakes and How to Avoid Them](https://shoutingnow.com/blog/common-unit-conversion-mistakes/) Learn the most common unit conversion mistakes, why they happen, and how to avoid them, with examples, tips, FAQs, and a free unit conversion calculator. - [Celsius vs Fahrenheit: Difference & Which Scale to Use](https://shoutingnow.com/blog/celsius-vs-fahrenheit/) Learn the differences between Celsius and Fahrenheit, how to convert temperatures, where each scale is used, and common conversion mistakes to avoid. - [Military Time Explained: 24-Hour Clock Conversion Guide](https://shoutingnow.com/blog/military-time-explained/) Learn how military time works, how to convert between 12-hour and 24-hour time, and where the 24-hour clock is used in aviation, hospitals, and travel. - [Time Zone Conversion Guide: World Time Zones Explained](https://shoutingnow.com/blog/time-zone-conversion-guide/) Learn how time zone conversion works, understand UTC, daylight saving time, and convert time between countries with confidence for meetings and travel. - [Metric vs Imperial: What’s the Difference and When to Use](https://shoutingnow.com/blog/metric-vs-imperial/) Learn the differences between the metric and imperial systems, conversion tips, charts, common mistakes, and when to use each measurement system. - [History of Measurement Units: Ancient Civilizations to SI](https://shoutingnow.com/blog/history-of-measurement-units/) The history of measurement units, from ancient civilizations to the metric system and SI units. Learn how measurement standards evolved over time. - [How to Clear TI-84 Memory (History, Variables & Graph DB)](https://shoutingnow.com/blog/how-to-clear-ti-84-memory/) Clear TI-84 Plus CE memory without a full factory reset, history, lists, variables, graph database, RAM vs archive, and when All Memory is required for exams. - [How to Do Fractions on TI-84 Plus CE (Enter, Convert, Multiply)](https://shoutingnow.com/blog/how-to-do-fractions-on-ti-84-plus-ce/) Do fractions on TI-84 Plus CE: enter mixed numbers, convert decimals with ▶Frac, multiply and divide, and use SAT-ready shortcuts on the handheld or online. - [TI-84 Plus CE Reset Tutorial (RAM, Factory & Exam Prep)](https://shoutingnow.com/blog/ti-84-plus-ce-reset-tutorial/) Reset TI-84 Plus CE safely, soft reset, clear RAM, factory All Memory wipe, keep programs with Defaults, Python notes, and exam prep steps teachers require. - [How to Charge TI-84 Plus CE (Cable, Computer & Orange Light)](https://shoutingnow.com/blog/how-to-charge-ti-84-plus-ce/) Charge TI-84 Plus CE with USB cable, computer port, or phone adapter, battery icons, orange light meaning, charge time, and Validating OS troubleshooting fixes. - [How to Write Notes on TI-84 Plus CE (Program & NoteFolio)](https://shoutingnow.com/blog/how-to-write-notes-on-ti-84-plus-ce/) Write notes on TI-84 Plus CE with the Program editor for quick formulas, or transfer longer study sheets with NoteFolio and TI Connect CE. Includes Mac/PC steps, memory tips, and exam-day rules. - [Graphing Equations on TI-84 Plus CE (Functions, Lines & Solver)](https://shoutingnow.com/blog/graphing-equations-on-ti-84-plus-ce/) Graph equations on TI-84 Plus CE with Y=, WINDOW, ZOOM, vertical lines, Numeric Solver, blank-graph fixes, and SAT intersect workflows you can practice online. - [Racine Carree Calculator Guide: Square Roots, Imaginary Numbers & Examples](https://shoutingnow.com/blog/racine-carree-calculator-guide/) Learn how the Racine Carree Calculator finds square roots instantly, positive numbers, decimals, perfect squares, and negative radicands with imaginary results. Examples, steps, and FAQs. - [AP® English Language Score Calculator Guide: Estimate Your 1-5 AP Score](https://shoutingnow.com/blog/ap-english-language-score-calculator-guide/) Learn how AP® English Language scoring works, MCQ/FRQ weights, rubric points, composite math, and targets for a 3, 4, or 5. Includes a free score calculator. - [EZ Grader Calculator Guide: Average, Final, Weighted & Easy Grader Explained](https://shoutingnow.com/blog/ez-grader-calculator-guide/) Learn how to calculate average, weighted, and final exam grades, plus quick Easy Grader test scoring, with step-by-step formulas, letter-grade conversion, and a free EZ Grader Calculator. - [Million to Billion Converter Guide: Formulas, Charts & Examples](https://shoutingnow.com/blog/million-to-billion-converter-guide/) Learn how to convert millions to billions and back. Short-scale definitions, conversion formulas, reference charts, and real-world scale comparisons. - [GST Calculator Guide: Rates by Country, Formulas & Free Tools](https://shoutingnow.com/blog/gst-calculator-guide/) Calculate GST for India, Australia, Canada, Singapore, NZ, and more. Compare 2026 rates, learn forward and reverse formulas, and use free country and percentage GST calculators. - [Age Calculator Guide: Find Your Age in Years, Months & Days](https://shoutingnow.com/blog/age-calculator-guide/) Learn how to calculate exact age from date of birth, find age on any date, compare two people, count down to your next birthday, and when precise age matters for school, sports, and legal forms. - [How to Calculate Percentage: Simple Formulas with Examples](https://shoutingnow.com/blog/how-to-calculate-percentage/) Percentage math boils down to a handful of formulas once you see the pattern. Here is how to find percent of a number, convert ratios, and work out increases and decreases, with free calculators alongside each one. ```json [{"@context":"https://schema.org","@type":"Organization","name":"ShoutingNow","url":"https://shoutingnow.com/","logo":{"@type":"ImageObject","url":"https://shoutingnow.com/wp-content/themes/shoutingnow-theme/assets/images/logo.png"},"sameAs":["https://x.com/makani20","https://www.linkedin.com/in/makani20/","https://post-see.com"],"contactPoint":{"@type":"ContactPoint","contactType":"customer support","email":"support@shoutingnow.com","url":"https://shoutingnow.com/contact/"},"slogan":"Learn. Build. 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