Desmos Graphing Calculator vs Contexto

Explore math with the fast and powerful Desmos Graphing Calculator. Plot any equation, from lines and parabolas to derivatives and Fourier series. Add sliders to demonstrate function transformations, create tables to input and plot data, animate your graphs, and more—all for free. Features: Graphing: Plot polar, cartesian, or parametric graphs. There’s no limit to how many expressions you can graph at one time—and you don’t even need to enter expressions in y= form! Sliders: Adjust values interactively to build intuition, or animate any parameter to visualize its effect on the graph. Tables: Input and plot data, or create an input-output table for any function. Statistics: Find best-fit lines, parabolas, and more. Zooming: Scale the axes independently or at the same time with the pinch of two fingers, or edit the window size manually to get the perfect window. Points of Interest: Touch a curve to show maximums, minimums, and points of intersection. Tap the gray points of interest to see their coordinates. Hold and drag along a curve to see the coordinates change under your finger. Scientific Calculator: Just type in any equation you want to solve and Desmos will show you the answer. It can handle square roots, logs, absolute value, and more. Inequalities: Plot Cartesian and polar inequalities. Accessibility: Read and edit math using a screen reader or a refreshable Braille display, and use audio trace to explore graphs and data through sound. Offline: No internet access required. Visit www.desmos.com to learn more and to see the free browser version of our calculator.

Contexto is a flashcard app where every word appears in fresh, level-matched sentences — never the same one twice — and every review builds a real conversation. So you don't just remember words. You learn to use them. Available for Spanish, German, Italian, and Mandarin Chinese. NEVER SEE THE SAME SENTENCE TWICE In other flashcard apps, you end up memorizing the card, not the word. Contexto generates a new sentence for every review, matched to your level — so what you're recalling is the word, not the flashcard. FLASHCARDS THAT TALK BACK Every review builds toward a real conversation with Contexto. Answer, respond, and watch the dialogue grow — ending with a free-response reply in your own words. Say it wrong, learn to say it right: if your reply misses the mark, Contexto shows you how to say what you meant. YOU DON'T JUST REMEMBER WORDS — YOU LEARN TO USE THEM Mastery comes from recall, comprehension, and construction — not just whether you tapped the right answer. A curriculum of words for every level, with clear progress as you master each unit. EVERY FORM, TRACKED SEPARATELY You know hablar — but do you know hablarías? Contexto tracks your familiarity with each grammatical form on its own, not just the word as a whole. ALSO INCLUDED - Tap any word to translate it - Save any word into your own review packets - Speaking practice with pronunciation feedback