Unit 08 · Informational & Technical Communication · Week 22

Structures of Explanation

Which structure best helps a reader understand a complex idea?

Five complete lessons with local technical evidence, explicit instruction, printable workspaces, and evaluator-reviewed mastery.

Weekly targets

Explain accurately and accessibly

  • Use accurately: definition, classification, sequence, cause and effect, comparison, analogy, cohesion, heading.
  • Make structure, evidence boundaries, and usability visible.
  • Complete 600–800-word explanatory article with structure map.
  • Revise after testing and evaluator feedback.

Local communication commission · Rivermark Learning Annex

Write information people can actually use

Following the Unit 7 investigation, Rivermark authorizes a ten-day evening pilot. The student communication team must explain the pilot, write a usable check-in procedure, and report attendance accessibly.

Evidence boundary: Rivermark, its annex, and all records in this packet are course-created simulations. They support this instructional commission only and must not be represented as real public data.

Week 22 technical packet

Shared facts and constraints

Pilot facts

  • The annex opens Monday–Friday, 4:00–8:00 p.m., for students ages 13–18.
  • Available areas: quiet room, collaborative room, device-charging counter, and reference desk.
  • A student checks in, chooses an area, follows its noise expectation, and checks out.
  • The pilot tests demand, safe access, staffing needs, and transportation concerns.

Two structures for the same subject

Sequence explains what a visitor does from arrival to departure. Classification explains how the four service areas differ. A complete article may use both, but each section needs a clear controlling purpose.

Day 106 · Required lesson

Purpose, audience and complexity

Define what the reader must understand or do after reading.

Direct instruction and model

Information is not automatically explanation. Writers select and organize details for a named audience, purpose, and prior-knowledge level.

Independent evidence

Create an audience profile for a first-time student visitor. List what the reader knows, needs, may misunderstand, and should be able to do.

Day 107 · Required lesson

Choose the governing structure

Match definition, classification, sequence, cause-effect, comparison, or analogy to the explanatory problem.

Direct instruction and model

Structure is a reasoning decision. Classification reveals categories; sequence reveals order; cause-effect reveals mechanisms; comparison clarifies meaningful relationships.

Independent evidence

Test three structures against the pilot facts. Choose a governing structure and justify why it serves the audience better than the other two.

Day 108 · Required lesson

Build hierarchy and headings

Use headings to expose relationships rather than decorate the page.

Direct instruction and model

A heading promises the content beneath it. Parallel headings use consistent grammatical form and comparable levels of detail.

Independent evidence

Produce a heading outline with one title, three section headings, and supporting points. Repair two headings that overlap or break parallel structure.

Day 109 · Required lesson

Create cohesion

Connect ideas with reference, repetition, transitions, and known-to-new order.

Direct instruction and model

Cohesion helps readers see how sentences belong together. Repeat key terms precisely; use pronouns only when their references are unmistakable.

Independent evidence

Draft one section of 180–250 words. Mark each transition and every pronoun reference; revise one ambiguous or abrupt connection.

Day 110 · Required lesson

Explain and verify

Publish an explanation whose organization can be named and defended.

Direct instruction and model

A successful explanation is accurate, sufficiently developed, logically organized, and usable by its audience. Decorative fluency cannot compensate for missing facts.

Independent evidence

Submit the 600–800-word article, structure map, fact check, revision note, and a 150-word explanation of the governing structure.

Weekly mastery assessment

600–800-word explanatory article with structure map

Submit the named product, five daily responses, fact check, meaningful revision, and reflection. Preparation and submission are not mastery.

Criterion2 · Secure1 · Developing0 · Insufficient
Accuracy and evidence boundarySpecific, accurate and completePartly demonstrated; revision requiredMissing, unusable or inaccurate
Structure and reasoningSpecific, accurate and completePartly demonstrated; revision requiredMissing, unusable or inaccurate
Audience usabilitySpecific, accurate and completePartly demonstrated; revision requiredMissing, unusable or inaccurate
Language and accessible designSpecific, accurate and completePartly demonstrated; revision requiredMissing, unusable or inaccurate
Testing, revision and reflectionSpecific, accurate and completePartly demonstrated; revision requiredMissing, unusable or inaccurate

Mastery: 8/10 after evaluator review. Below 8/10, revise the lowest criterion and resubmit. Optional tools and completion controls cannot assign the score.