Grade 3 Spring — Informational/Expository Writing, Research Process Introduction, and Dialogue Mechanics Maintenance
Lesson 3 55 min eng.g3.s.lesson_03.tdet_body_paragraph_intro

Meet the TDET Body Paragraph — Topic, Detail, Example, Transition

Objectives
  • Students identify the four bands of a TDET body paragraph (TOPIC SENTENCE, DETAIL, EXAMPLE, TRANSITION).
  • Students draft body paragraph 1 of their informational essay using TDET, drawing on what they already know about their expert topic.
Vocabulary
TDETtopic sentencedetailexampletransition

Lesson plan

Warm-up

5 min

TDET detective: teacher displays a sample TDET body paragraph on the board ('Honeybees live in colonies of thousands of bees. Each colony has one queen, many workers, and a few drones. For example, a single colony can have between 20,000 and 80,000 bees in summer. Inside the hive, every bee has a job.') and asks children to identify the four bands.

Teacher moves
  • Read the paragraph aloud slowly
  • Pause after each sentence and ask 'TOPIC, DETAIL, EXAMPLE, or TRANSITION?'
  • Highlight each band with a colored marker (purple/blue/orange/green)
Media
M-3-S-WR-03-C Illustration
Reference image of the honeybee TDET paragraph with the four sentences highlighted in purple, blue, orange, and green re

Reference image of the honeybee TDET paragraph with the four sentences highlighted in purple, blue, orange, and green respectively. Beside each sentence: a small label flag identifying the band. Print-ready 8.5x11.

Direct instruction

15 min

Today you meet the TDET routine — the body-paragraph engine of every informational essay you will write this term. TDET stands for TOPIC SENTENCE + DETAIL + EXAMPLE + TRANSITION (point at MG-3). TOPIC SENTENCE (purple): a clear statement of what THIS PARAGRAPH is about. Not the whole essay — just this paragraph. DETAIL (blue): one fact or observation that supports the topic sentence. EXAMPLE (orange): a SPECIFIC case, name, number, or moment that makes the detail concrete. TRANSITION (green): a sentence at the end that points toward the next paragraph. Watch the model paragraph one more time, this time as the teacher writes it from scratch. (Teacher narrates aloud) 'My topic for body 1 is HOW HONEYBEES LIVE. Topic sentence: Honeybees live in colonies of thousands of bees. Detail: Each colony has one queen, many workers, and a few drones. Example: For example, a single colony can have between 20,000 and 80,000 bees in summer. Transition: Inside the hive, every bee has a job. That transition points to body 2 — which will be about jobs.'

Key examples
  • Notice the EXAMPLE has a specific name (Inky), a specific year (2016), and a specific location (New Zealand). That's what makes an example concrete.
    model Topic sentence (purple): 'Octopuses are surprisingly smart.' Detail (blue): 'Scientists have shown that octopuses can solve puzzles, open jars, and even recognize human faces.' Example (orange): 'For example, an octopus named Inky at the National Aquarium of New Zealand escaped from his tank through a drain pipe in 2016.' Transition (green): 'Besides their intelligence, octopuses also have an amazing way of moving through the water.'
    prompt Teacher writes a second TDET model paragraph from scratch using a different topic (octopuses).
Checks for understanding
  • What is the difference between a DETAIL and an EXAMPLE?
  • What does a TRANSITION sentence do?
Media
M-3-S-WR-03-A Chart
Reproduction of MG-3 at 11x17: a vertical stacked card with four color-coded bands — TOPIC SENTENCE (purple, with flag i

Reproduction of MG-3 at 11x17: a vertical stacked card with four color-coded bands — TOPIC SENTENCE (purple, with flag icon), DETAIL (blue, with magnifying glass), EXAMPLE (orange, with star), TRANSITION (green, with arrow). Below the chart: a worked example paragraph (honeybees) with each sentence color-highlighted to match the band. Print-ready, dyslexic-friendly font.

MG-3 Chart Physical / non-image

TDET body-paragraph anchor chart: a 4-band stacked card — TOPIC SENTENCE (purple, with a flag icon — 'this paragraph is about ___'), DETAIL (blue, with a magnifying glass — 'one fact or observation'), EXAMPLE (orange, with a star — 'a specific case, name, or number'), TRANSITION (green, with an arrow — 'pointing to the next paragraph'). Worked example shown below: 'Honeybees live in colonies of thousands of bees. (TOPIC) Each colony has one queen, many workers, and a few drones. (DETAIL) For example, a single honeybee colony can have between 20,000 and 80,000 bees in summer. (EXAMPLE) Inside the hive, every bee has a job. (TRANSITION to body 2 — jobs)' Print-ready 11x17.

Guided practice

15 min
Tasks
  • Pick the FIRST focus from your introduction's roadmap. Draft body paragraph 1 using TDET. Use the color-coded sentence-strip kit to physically build the 4 bands before writing.
    scaffold TDET sentence-strip kit + MG-3 anchor + MG-14 topic-sentence builder
  • Color-mark your draft: purple under topic, blue under detail, orange under example, green under transition.
    scaffold Colored pencils + MG-3 reference
Media
M-3-S-WR-03-B Manipulative Physical / non-image

Photo of the recommended classroom kit: 4 sentence-strip slots labeled (purple TOPIC, blue DETAIL, orange EXAMPLE, green TRANSITION) on a desk-size laminated mat; a stack of pre-printed sample sentence strips for each band; blank strips for child-generated sentences. Children physically arrange their 4 sentences on the mat before transferring to paper. Print-ready 4x6 catalog photo for materials reference.

Formative assessment

5 min
Exit ticket
  • Read your TDET paragraph aloud to a partner. Partner names: TOPIC, DETAIL, EXAMPLE, TRANSITION.
  • Star which band was hardest to write.
scoring All 4 bands identified by partner = mastery; 3 = practicing; 2 or fewer = TDET reteach in lesson 6.

Closure

3 min
Moves
  • Hold up your TDET paragraph.
  • Predict: tomorrow we meet Tier-2 Set 8 — process words like RESEARCH and PARAPHRASE.

Homework

10 min
Tasks
  • At dinner tonight, tell a family member ONE TDET paragraph about your expert topic. Say the four bands out loud. Notice which one is hardest to remember.

Exercises in this lesson

eng.g3.s.ex_05
Pick the FIRST focus from your roadmap. Use the TDET routine to draft body paragraph 1. Write 4-6 sentences: TOPIC SENTENCE + DETAIL +...
tdet paragraph draft · diff 3
eng.g3.s.ex_06
Color-mark your TDET paragraph from ex_05. Use 4 colored pencils: purple under topic sentence, blue under detail, orange under example,...
tdet color annotation · diff 2

Differentiation

Scaffolds
  • Pre-printed TDET template with 4 sentence slots labeled (TOPIC / DETAIL / EXAMPLE / TRANSITION)
  • Color-coded TDET sentence-strip kit (purple/blue/orange/green)
  • Topic-sentence frame card (3 starter frames from MG-14)
Extensions
  • Write TWO TDET paragraphs (body 1 and body 2) so the transition between them connects.
  • Try the same DETAIL with two different EXAMPLES and pick the stronger one.
English Learners
  • Bilingual TDET anchor
  • Oral rehearsal in pair before writing
  • Color-code-only path (mark the bands without rewriting)
Ieps 504s
  • Sentence-strip-only manipulative (no writing required)
  • Reduced target: TDS (topic+detail+transition, skip example) version
  • Adult scribe; child speaks the four bands

Teacher notes

TDET is the most important routine of the spring term and will be revisited at least six more times (lessons 6, 9, 12, 15, 18, 21). The sentence-strip kit is non-negotiable for the first three TDET lessons — children who only see the routine on a chart often fail to internalize the four-band structure. Watch for the DETAIL-vs-EXAMPLE confusion — children frequently write two of the same kind of sentence. Use the rule: 'Detail = general fact. Example = specific case with a name, number, or place.' The transition sentence is the second-most-skipped move; if a child writes only the first three bands, gently push for the fourth. The transition will become the bridge to body 2 in lesson 6.