Best ti89 graphing calculator 2020.
1 – NumWorks Graphing Calculator
***EDIT March 20, 2018 NumWorks has had several updates (now at version 1.3) in the last few months and I’ve upgraded it to 4 stars. Not yet perfect, but much more capable than it was. I’ve updated my review. ***This is a fantastic scientific and graphing calculator. I am a high school math teacher, and I can now recommend it for all high school classes.It performs basic calculations very nicely. I love how it gives both exact and approximate answers. Even with logs! Enter “log 49” and the response is “2 log(7) ~ 1.69196”. Awesome! Would give students an unfair advantage, so I wouldn’t allow this on a test!NumWorks has become my go-to scientific calculator, as nearly every operation you want to do for high school math is available with a single key press (I get so tired of hitting the “2nd” key on my TI-84). Some actions need a “shift”, such as absolute value and factorial, but it is really well designed to have common functions easily available. My biggest complaint is accessing the memory function. Unlike the TI products, you can’t just press the “x” key, you must use a capital letter such as “X”, available after pressing the alpha key and finding the proper letter, which as other have mentioned are nearly unreadable because yellow on white isn’t enough contrast. Unless there’s a shortcut I don’t know about, it takes 7 key presses to store the number 6 in memory.As a GRAPHING calculator, the NumWorks is now superb. It graphs quickly and beautifully. I love how it can auto-calculate the y values for the window — setting the window size is faster than the TI. With the graph displayed, press the OK button to get a menu which will find intersections, zeros, min and max. There is a trace feature, but jumping to a specific x value isn’t as easy as on the TI.REGRESSION: Most students in the US now learn about regression and lines of best fit. The NumWorks performs a linear regression quite nicely. It’s easy to enter and edit data, and the graph is easily displayed, both data points and line of best fit, with nice colors. The equation of the line of best fit is calculated along with the regression coefficient. The problem is that only linear regression is available. And while this is the only type of regression required by Common Core, I always introduce other types of regression (quadratic, exponential, etc.), as I like to model real-world phenomena. To me, this is the largest downfall of the NumWorks. Until it’s provided, there are some nice online tools that do regression (Desmos, Wolfram Alpha, etc.).I haven’t touched the probability, sequences, or python part of the calculator so I can’t comment on that.In most ways, the NumWorks calculator surpasses its TI competitors, but it lacks important functionality with regression. Once this is provided, we’ll have a 5-star calculator! .
This calculator is really good and a good price. The only reason I’m giving it 4 stars instead of 5 is because I think that is missing two features that would greatly improve the functionality. It is missing Engineering Notation and a Programmer Mode. With these features it would be a 5 start product for sure.I was also pleasantly surprised that the entire project is open source. Everything is available on GitHub including the STL files for the house, buttons and cover. This is great since anyone that doesn’t like that it comes in all white, has the option to 3D print replacement parts.I was also pleasantly surprised with the company’s customer service. I emailed them with a couple of questions and suggestions and received a response within 12 hours. The good thing here was that Léo, not only answered my question, he also responded to my suggestions and asked for clarification on one of them. This tells me that this company is not just interested in selling a product, but also trying to work with its customers to make the best product.Lastly, the addition of a Python app to run Python scripts is a very welcome addition to a graphing calculator. Unfortunately the only way to input Python code is either through the calculator, which isn’t great, or by modifying the source code and pushing it as an update. While this is limiting, I’m sure that the process will get better in future updates.I do recommend this calculator to anyone that is looking for a good graphing calculator. I’m not sure if it is currently approved by any of the testing boards yet, but if you aren’t worried about testing approval, than this is a great option.Update: I have found that, as another reviewer wrote, the factorial function does not work on software version 1.1.0. If you need factorial functionality now, I would recommend writing a Python script to do it. This sort of thing is exactly why I love that Python is on this calculator. While Python obviously isn’t on here in order to workaround software bugs, it is nice to have an ability to write a script to do something that the main programming can’t. .
I’m really enjoying this calculator. The key to appreciating the device is to realize it is not meant to be an iPhone. A calculator’s job is to sit on your desk for weeks and still hold a charge, ready for math at a moment’s notice. The NumWorks calculator performs this most basic function. The keyboard is easy to use, I can live with the hard-to-read alpha keys as it is always much more practical to type on a computer and if necessary upload Python scripts to the device, and I’m really enjoying the natural rendering of fractions and the simple CAS feature that shows exact and approximate results. On top of that, there’s the added fun of maybe hacking it in the future. A nice upgrade from my old machine. .
Faut commencer par faire une mise à jour (avec le câble USB fourni) sur le site de NumWorks, c’est à priori nécessaire pour corriger entre autres quelques soucis de calcul (erreurs de jeunesse !) et de toute façon c’est toujours appréciable de pourvoir “mettre à jour” son produit.Il faut d’abord s’inscrire en ligne sur leur site et attention la procédure de maj ne fonctionne que sous Chrome (en tout cas pas sous Firefox), un peu dommage pour un produit OpenSource…Le produit lui-même est plutôt agréable à la prise main, le look sympa, la recharge par USB (chargeur non fourni) semble efficace mais la qualité du clavier parait un peu moyenne (à voir sa tenue sur la durée…).Autres choses qui me chagrinent dans la version actuelle:- pas trouvé de réglage de la précision, à priori forcé à 6 chiffres après la virgule ? bizarre et limitant !- calcul exact, la simplification d’équations semble correcte mais limitée, à creuser…- pas de calcul formel (là c’est plus compliqué mais peut-être pas dans la cible de ce produit ?)Une spécificité de la calculatrice mise en avant par son concepteur est la prog Python :- la calculatrice connectée en USB sur son compte Numworks, on peut éditer un script Python en ligne, le récupérer de la calculatrice ou l’envoyer vers la calculatrice, à priori uniquement en mode cloud car pas de stockage des scripts en local sur le PC…- l’édition de script directement dans la calculatrice est aussi possible, mais à l’usage trop prise de tête mais ce petit clavier alphabétique…- 4Ko de dispo max pour stocker l’ensemble des scripts Python, oui oui 4Ko… back to 90’s !!!Aucun manuel fourni, mais des tutoriels sur le site de NumWorks plutôt bien faits et un manuel pdf téléchargeable.En conclusion, cette calculatrice est un produit intéressant et évolutif, à suivre sur les mises à jour logicielles (précision ? calcul formel ? autres), mais la partie hardware risque d’être très vite sa limitation première (taille mémoire allouée à la prog ridicule et temps d’exécution de scripts un peu gourmands vite problématique).Je mets une bonne note générale pour saluer cette initiative mais c’est clairement un produit perfectible et j’ai de gros doutes sur ses capacités d’évolution (sans charger le hard) ! .
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Best ti89 graphing calculator 2020.
Best ti89 graphing calculator 2020.