South Dakota ELA 11-12.RST.2.a

ELAGrades 11–12Reading: Science/Technical Subjects

The Standard

11-12.RST.2
Determine the central ideas of a text.
Analyze and evaluate the text’s development of a complex process, phenomenon, or concept.

South Dakota English Language Arts Standards (2025)

Teacher's field guide

What This Standard Means

What Students Need to Do

Students follow how a science or technical text builds an explanation, not just name its topic. They track how the parts connect and judge whether the details make the process or idea clear.

What Mastery Looks Like

A student can show how each part of the explanation builds on the last, using details from the text. They can point to a missing link or weak explanation and say how it affects the reader's understanding.

Common Misconceptions

Students may list steps without explaining how one leads to the next. They may call a passage clear because it has a diagram or technical words, even when it skips a cause or leaves a key term unexplained.

How to Assess It

Hand out a one-page explainer on lithium-ion battery charging. Ask students to connect three steps, then cite one place where a missing detail makes the process hard to follow.

Lesson moves

Ways to Teach It

  1. Give pairs wastewater treatment articles and index cards; have them sort the stages and mark a missing link in the explanation.

  2. Ask students to write: 'How does the author connect ocean warming to coral bleaching, and what explanation is still missing?'

  3. Play a three-minute find-the-gap game with a paragraph on gene editing; teams score by naming an unexplained transition and drafting a fix.

  4. Have students read a city water treatment explainer, trace water from intake to tap, and mark one step needing more detail.

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Printable 11-12.RST.2.a Worksheet

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