Purpose Elementary school students are expected to participate in science learning settings that place high demands on skill with certain types of grammatical structures, including complex sentences. This research note aims to clarify the types of complex sentences that are evident in a general education science curriculum across the elementary school years in order to assist clinicians and others in better understanding the specific language demands of science learning in the classroom. Method I analyzed all sentences within children's texts and suggested teacher scripting from the first-, third-, and fifth-grade science units of a commonly used general education curriculum aligned to the Next Generation Science Standards. We determined the frequency and type of complex sentences that were present for each type of material (text, teacher scripts) and grade level. Results Complex sentences are evident in both children's texts and suggested scripting provided to teachers at all grade levels. The rate of complex sentences in children's readings is higher in third- and fifth-grade texts than in first-grade texts. Complement clauses are common throughout, and adverbial and relative clauses are more frequent in third- and fifth-grade texts than in first-grade texts. Conclusions Children are expected to read and listen to complex sentences across the elementary school years. Speech-language pathologists should be aware of the language demands that general education science curricula may pose to students at different ages.

中文翻译：

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基础科学课程中的复杂句子：研究笔记。

目的希望小学生参加对某些语法结构（包括复杂句子）的技能有很高要求的科学学习环境。本研究报告旨在阐明在整个小学阶段通识教育科学课程中显而易见的复杂句子的类型，以帮助临床医生和其他人员更好地理解教室中科学学习的特定语言要求。方法I分析了儿童课本中的所有句子，并建议根据通用科学课程的通用科学课程的一年级，三年级和五年级科学课的教师脚本编写，以适应下一代科学标准。我们确定了每种材料（文本，教师脚本）和年级。结果这两个孩子的课文中都有明显的复杂句子，并且为所有年级的老师提供了建议的脚本。在三年级和五年级课文中，儿童阅读中的复杂句子比率高于一年级课文。补语从句在整个过程中很常见，状语和从句在三年级和五年级课文中比在一年级课文中更常见。结论期望儿童在小学阶段阅读和听复杂的句子。言语病理学家应意识到通识教育科学课程可能对不同年龄的学生提出的语言要求。在三年级和五年级课文中，儿童阅读中的复杂句子比率高于一年级课文。补语从句在整个过程中很常见，状语和从句在三年级和五年级课文中比在一年级课文中更常见。结论期望儿童在整个小学阶段阅读和听复杂的句子。言语病理学家应该意识到通识教育科学课程可能对不同年龄的学生提出的语言要求。在三年级和五年级课文中，儿童阅读中的复杂句子比率高于一年级课文。补语从句在整个过程中很常见，状语和从句在三年级和五年级课文中比在一年级课文中更常见。结论期望儿童在小学阶段阅读和听复杂的句子。言语病理学家应意识到通识教育科学课程可能对不同年龄的学生提出的语言要求。结论期望儿童在整个小学阶段阅读和听复杂的句子。言语病理学家应意识到通识教育科学课程可能对不同年龄的学生提出的语言要求。结论期望儿童在小学阶段阅读和听复杂的句子。言语病理学家应意识到通识教育科学课程可能对不同年龄的学生提出的语言要求。