English
Grammar, vocabulary, context, register, and thematic revision lessons.
Open English revisionInteractive practice
Revision lessons
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Japanese
Grammar, kanji, vocabulary, and structured beginner practice.
Open Japanese revision
Spanish
Interactive grammar and vocabulary practice in contextual Spanish.
Open Spanish revision
Portuguese
European Portuguese practice with Brazilian contrasts where usage differs.
Open Portuguese revision
Chinese
Numbered revision materials for supported Chinese lessons.
Open Chinese revisionAssigned revision
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The grammar explorers are reference libraries. Revision lessons are for practice.