pre-second gradeとは 意味・読み方・使い方

In 1988, it opened the Taipei Branch (Taiwan) and started the business of study-at-home material for pre-school children called the “Kodomo Challenge” (“巧連智” in Taiwan) from the following year, then expanded the target school age (currently, there are infant courses, early elementary grades version for first- and second-grade primary school students, and the version for third to sixth grades).例文帳に追加

次いで1988 年に台北支社（台湾）を開設し、翌年から就学前の年長児向けの家庭学習商品「こどもちゃれんじ」（台湾では「巧連智」）事業を始め、対象学齢を拡大した（現在は幼児向け講座と小学1、2 年生向けの低学年版、3、4 年生向けの中学年版を展開）。 - 経済産業省