Upon visiting the website, Joe will encounter a screen that prompts him for the language he's studying, the textbook he's using, and the chapter he's studied up to. There will be no registration or login required in this model prior to being able to read sentences. Thus, this interface is efficient for new users, because they don't need to go through the registration process. Because the options presented depend on the previous selections (ie the textbooks displayed in the textbook list depend on the language selected), then the steps are numbered to ensure that users will choose options in that order. The below image shows the textbook selection screen.
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After selecting his language, textbook, and chapter, Joe will now be presented with a listing of sentences that use the vocabulary and grammar in that chapter. In the initial state, Joe will be shown sentences that must contain either grammar or vocabulary from the current chapter he is studying, and must not contain vocabulary or grammar that have not been taught in the textbook up to that point. If Joe happens to have skipped some part of the material for certain chapters, he can deselect them in the grammar/vocab/kanji known sidebars on the left side. The sentences will each have below them initially-collapsed accordion menus which can be expanded to show the romanization, English translation, and list of grammatical patterns and vocabulary that the sentence uses. The below image shows the initial sentence reading screen, and the sidebar.
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When Joe reads the sentence, and fails to understand some particular word (in the scenario, りんご), he will likely hover over the word, at which point the mouse cursor will change shape to indicate clickability, and then Joe will click the word. This will cause the Vocab accordion menu to be expanded, and りんご will become highlighted. There, the romanization "ringo" and English translation "apple" of that vocab word will be displayed. Should Joe wish to practice reading additional sentences that use that vocabulary word, he can click the "more sentences" link next to the word in the Vocab accordion menu, which will open a new tab displaying only sentences that have that vocab item (which also use only grammar and vocab that have been covered in the textbook that Joe indicated).
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If Joe wants to have the English translation of a sentence displayed, he can expand the "Show English translation" accordian menu. If Joe does not understand some grammatical aspect of the sentence, or simply wants more practice with a grammatical form (in the scenario, the -tai verb conjugation), he can expand the Grammar accordian menu. Here, he will find the listing of grammatical aspects that are used in this sentence. Similarly to the Vocab accordian menu, there is a "more sentences" link that, if clicked, will open a new tab displaying only sentences that use that grammatical pattern.
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The Vocab In this case, an overlay will appear, highlighting the word, and displaying information about it, including its romanization and meaning. Should Joe decide that he needs to practice a particular grammatical .
When Joe forgets
When Joe
The sentences will each have below them initially-collapsed folding menus which can be expanded to show the romanization, English translation, vocabulary, or the list of grammatical structures that the sentences uses.