Posts on the forum of sorobanexam.orghttps://www.sorobanexam.org/forum/rss2024-05-20T10:16:44ZsolsTiCe d'Hiversolstice.dhiver@sorobanexam.orgRSS feed of posts on www.sorobanexam.org/forumWorksheets used by students in Japan2024-05-20T10:16:44Z2024-05-20T10:16:44ZsolsTiCe d'Hiverredacted.for.privacy@example.comhttps://www.sorobanexam.org/forum/topic/109#320<strong>2024-05-20 10:16:44, solsTiCe d'Hiver</strong> wrote:<br>Hello,<br>
Yes, I have noticed too, that they seem to use the same paper work; but that I think it is more a coincidence, because they use somehow the same font, the same layout, the same paper size.<br>
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I don't know where you can find them. I have found some while browsing the web, and collected one or two, but they have only exercises for each level, and that's it. So you can't do much when you find one.<br>
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It seems the teachers have a collection of them, and that they seem hand crafted, meaning they are creating it manually and without a software; or it is a good one.<br>
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So, I can't really help you , sorry.Worksheets used by students in Japan2024-05-19T20:58:23Z2024-05-19T20:58:23Zzoomzoomredacted.for.privacy@example.comhttps://www.sorobanexam.org/forum/topic/109#319<strong>2024-05-19 20:58:23, zoomzoom</strong> wrote:<br>Where can I find/buy the workbooks used in Japan. For example, the one shown at this specific time: <a href="https://youtu.be/wIiDomlEjJw" rel="noopener">https://youtu.be/wIiDomlEjJw</a><br>
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It seems like all the soroban videos I've seen on Youtube, there's a standardized workbook.Any tips on reading the beads quicker?2024-04-24T15:12:04Z2024-04-24T15:12:04Zarikredacted.for.privacy@example.comhttps://www.sorobanexam.org/forum/topic/108#318<strong>2024-04-24 15:12:04, arik</strong> wrote:<br>This is a skill issue for me when I write my answer from the soroban left-to-right, with large numbers more than ten thousand. I want to read immediately as fast as I can read Arabic numerals.<br>
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Is this done with pure, diligent practice?Suggestion: Modoshizan, a different divison method2024-04-13T13:48:43Z2024-04-13T13:48:43ZsolsTiCe d'Hiverredacted.for.privacy@example.comhttps://www.sorobanexam.org/forum/topic/107#317<strong>2024-04-13 13:48:43, solsTiCe d'Hiver</strong> wrote:<br>Hello arik,<br>
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What I understand is that you are using a clever method (modoshizan ?), that allows you to adjust the quotient you choose when you are doing a division.<br>
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In your example 84/28, say you choose a quotient of 4, that is too big; instead of resetting your operation, and doing costly changes and possibly messing your operation, you adjust the quotient.<br>
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What I found online, is that you do it like that:<br>
If your quotient is too high, you decrease it by 1, then you count 2 rows to the right of that quotient, and then add on the selected row the amount of the digit divisor you are using.<br>
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And you can repeat the process multiple times, until you reach the correct amount for the quotient.<br>
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This is a method to be used if you don't find right away, the correct quotient, by backtracking if one can say.<br>
But, in fact, you are using the main method of doing the division. In between each step, you add steps to adjust the quotient, if you made the wrong guess. that's all ;-)<br>
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What I show on the virtual soroban, is the ideal way to make a division, with the correct quotient, right away.<br>
I can't add all the way to adjust a quotient like that, because you can use many different quotients sometimes; so this leads to too many possibilities to be displayed.<br>
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You can get the steps to do the division 720/15 by using the custom operation on the tutorial page of the virtual soroban.<br>
You don't need to learn the 15 multiplication table, because for a 2 digit divisor, you take each digit 1 then 5 separately<br>
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Go to <a href="https://www.sorobanexam.org/tutorials.html" rel="noopener">https://www.sorobanexam.org/tutorials.ht...</a> and in the "Custom operation" input box, type in "720/15", and press play, to watch the steps on the virtual soroban.<br>
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This should help you understand how to do itSuggestion: Modoshizan, a different divison method2024-04-12T13:26:14Z2024-04-12T13:26:14Zarikredacted.for.privacy@example.comhttps://www.sorobanexam.org/forum/topic/107#316<strong>2024-04-12 13:26:14, arik</strong> wrote:<br>Hello everyone! <br>
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I am new to this website, and I am learning the soroban for nearly a month now.<br>
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The way I do division about problems with divisors having more than 2 digits is called modoshizan （戻し算）, which means "returning number" calculation. I only know the multiplication table from ones to tens.<br>
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From my own understanding, basically it goes like this:<br>
84 / 28<br>
(I stole this from a Japanese YouTube video lol)<br>
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- Quotient answer is at the ones place.<br>
- Divide 8 from 84 by 2 to get 4; 4*2=8, and subtract the leftmost digit of the dividend by 80 to get 04.<br>
- Focusing on the second digit of the divisor, 8 (from 28) * 4 (from quotient) = 32. But we cannot subtract because 32 is greater than 4 (from the divisor).<br>
- We do this by taking one away from the quotient, hence the name. And add 20 from 28 to the dividend, now it is 24.<br>
- Again, 8*3 = 24 and the dividend is 24, subtract it by 24 to get 0.<br>
- The process is done because we went through all digits of the divisor, and the answer is 3.<br>
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(This explanation took way too long, so apologies if I missed a crucial step.)<br>
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What I want for the virtual soroban is showing how modoshizan calculations are done step-by-step. For the 'division' tutorial, it isn't really helpful if it only tells me which quotients I should choose. <br>
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How can I tell if 3 is the quotient from 84 and 23 if it is out of range from my multiplication table?<br>
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It would be helpful to know how it would calculate 720 / 15 because that equation stumped me from doing it. All I know is that would require me memorizing the multiplication table of fifteens.<br>
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Thank you for your time reading this forum post suggestion.<br>
:)Suggestion: numbers flashing in full screen2024-04-03T17:11:18Z2024-04-03T17:11:18ZVanstredacted.for.privacy@example.comhttps://www.sorobanexam.org/forum/topic/106#315<strong>2024-04-03 17:11:18, Vanst</strong> wrote:<br>Yes, that's precisely it! :-)<br>
The voice synthesis is a nice touch.<br>
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Have a nice day!Suggestion: numbers flashing in full screen2024-04-03T07:40:09Z2024-04-03T07:40:09ZsolsTiCe d'Hiverredacted.for.privacy@example.comhttps://www.sorobanexam.org/forum/topic/106#314<strong>2024-04-03 07:40:09, solsTiCe d'Hiver</strong> wrote:<br>Hello,<br>
<br>
You mean something like our tool on the page at <a href="https://www.sorobanexam.org/mentalcalculation.html?fullscreen=1" rel="noopener">https://www.sorobanexam.org/mentalcalcul...</a> ? ;-)<br>
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Or if you want a desktop app, there is also <a href="https://www.sorobanexam.org/anzan.html" rel="noopener">https://www.sorobanexam.org/anzan.html</a> a little app we made. You can use it offline, if you don't use the TTS speach synthetizer.<br>
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CheersSuggestion: numbers flashing in full screen2024-04-02T19:29:55Z2024-04-02T19:29:55ZVanstredacted.for.privacy@example.comhttps://www.sorobanexam.org/forum/topic/106#313<strong>2024-04-02 19:29:55, Vanst</strong> wrote:<br>Hello,<br>
<br>
Thank you for this website. I am still new to the soroban and the generator helps me a lot.<br>
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I'd like to suggest a new way to practise: numbers flash on a screen, one at a time, at a short interval. (See this video for an example: <a href="https://youtu.be/rhhpxXSh-8Y" rel="noopener">https://youtu.be/rhhpxXSh-8Y</a>)<br>
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In the video, the numbers flash extremely fast, but the speed could be a setting; the user may even choose to press enter or a button to display the next number.<br>
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The main goal would be to focus on one operation at a time. At present, I download PDFs. I look at the screen, look down to work on the soroban, then lift my head back at the screen and my eyes wander a little bit to refocus on the operation at hand. This is no big deal; actually this is part of the challenge. But we're not in a competition; we're here to enjoy practising the soroban.<br>
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Have a wonderful day!Ou lire les unités sur le Soroban?2023-10-25T15:00:06Z2023-10-25T15:00:06ZsolsTiCe d'Hiverredacted.for.privacy@example.comhttps://www.sorobanexam.org/forum/topic/105#312<strong>2023-10-25 15:00:06, solsTiCe d'Hiver</strong> wrote:<br>Bonjour,<br>
<br>
Non je ne pense pas que ça a une importance énorme.<br>
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Pour les additions, c'est soit complètement à droite pour les unités, pour les entiers; ou alors sinon sur un repère, surtout pour les décimaux, pour avoir un repère après la virgule.<br>
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Mais rien n'interdit d'utiliser un repère pour les entiers au milieu du soroban/boulier.<br>
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Je ne sais pas ce qui est mieux pour l'enseignement à un enfant. Utiliser le repère est plus simple ?<br>
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Ca ne changera pas grand chose pour la visualisation mentale ensuite. A ma connaissance.Ou lire les unités sur le Soroban?2023-10-25T11:28:39Z2023-10-25T11:28:39ZAlexandreredacted.for.privacy@example.comhttps://www.sorobanexam.org/forum/topic/105#311<strong>2023-10-25 11:28:39, Alexandre</strong> wrote:<br>Bonjour,<br>
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Je suis en train d'essayer de maitriser les notions de calcul avec le soroban avant de pouvoir initier mon fils de 7ans à cette méthode d'apprentissage.<br>
La question peut paraitre bête mais je la pose quand même: la finalité de tout ça, c'est de pouvoir faire du calcul mental en se basant sur l'image du boulier dans sa tête. du coup est-ce que c'est important de placer les unités à un endroit précis du boulier pour apprendre à un enfant ou pas? totalement a droite, ou légèrement décalé sous un point de repère?<br>
Merci pour votre aide<br>
<br>
Alexandre