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instructional + noun
instructional 作定语时，常修饰 video、material、design 等名词，表示“教学的、指导的”。
The teacher showed us an instructional video.
老师给我们看了一个教学视频。
教学的；教育的
先理解核心含义，再看它在真实句子里的用法。
教学的；教育的
relating to or used for instruction or teaching
The teacher showed us an instructional video.
老师给我们看了一个教学视频。
用于教学目的的,教学用的。
Intended for purposes of instruction, for teaching.
与教学职业有关的。
Relating to the teaching profession.
The cooking class includes an instructional session on knife skills.
烹饪课包括一节关于刀工技巧的教学环节。
Her presentation was more motivational than instructional, so we did not learn the steps.
她的演示与其说是教学性的，不如说是激励性的，所以我们没有学会步骤。
I found the instructional materials on the website easy to follow.
我觉得网站上的教学材料很容易理解。
instructional 作定语时，常修饰 video、material、design 等名词，表示“教学的、指导的”。
The teacher showed us an instructional video.
老师给我们看了一个教学视频。
用于表语时，表示“有指导作用的”，常见于正式或学术语境。
This explanation is instructional.
这个解释很有教育意义。
如需指明教学或指导对象，可用 for 引出某人。
The guidelines are instructional for new employees.
这些指导方针对新员工有指导作用。
Not this
The teacher gave instructional to the class.
Use this
The teacher gave instruction to the class.
instructional 是形容词，不能作 gave 的宾语；表示“教学、讲授”时应该用名词 instruction。
Not this
Her speech was very instructional.
Use this
Her speech was very instructive.
表示“有启发教育作用的”应该用 instructive；instructional 的意思是“教学的、与教学有关的”，通常修饰教学材料或方法。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
教学设计
She has a master's degree in instructional design.
她拥有教学设计硕士学位。
教学材料
The teacher prepared instructional materials for the lesson.
老师为这节课准备了教学材料。
教学策略
Effective instructional strategies engage students actively.
有效的教学策略能让学生积极参与。
教学技术
The school invested in instructional technology for every classroom.
学校为每间教室投资了教学技术。
教学视频
We watched an instructional video on how to use the machine.
我们观看了一个如何使用这台机器的教学视频。
教学计划
The new instructional program focuses on reading skills.
新的教学计划侧重于阅读技能。
Use instructional naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
instruct是“指导”，加上-ional变成“教学的”；老师指导学生的课程材料就是instructional。
语域：mixed 常见场景：education、training、media 该词多用于教育、培训等正式场合，但在口语中也常出现在 instructional video 之类的说法中，整体属于中性偏正式，比较常见于书面语。
constructional rhymes with instructional because both have the stressed syllable /strʌk/ followed by /ʃənəl/. educational, traditional, international, and conversational all end in -tional /ʃənəl/ but stress a different vowel, so they do not rhyme. structural shares the spelling and initial stressed sound /strʌk/ but ends in /tʃərəl/, not /ʃənəl/.
Dictionary facts from ECDICT, WIKTIONARY.