Lesson 40: A Rule for Spelling (The 1-1-1 Doubling Rule)

WHEELER'S ELEMENTARY SPELLER • TEACHER EDITION INSTRUCTIONAL GUIDE • LESSON 40 TEACHER ANSWER KEY & PEDAGOGICAL GUIDE

LINGUISTIC FOUNDATION • THE 1-1-1 DOUBLING RULE (CONSONANT GEMINATION):
In English orthography, a single consonant letter following a single vowel letter often signals an open syllable or a long vowel in derived forms (e.g., hope → hoping, plane → planing). To preserve the short vowel sound (/ʌ/, /æ/, /ɪ/, /ɛ/, /ʊ/) of a monosyllabic base, the final consonant is doubled before a vowel suffix (-ing, -ed, -y, -er, -est). This creates a closed syllable in the stem: run·ning /ˈrʌn.ɪŋ/, plan·ning /ˈplæn.ɪŋ/, rag·ged /ˈræɡ.ɪd/, rub·bed /ˈrʌbd/, sun·ny /ˈsʌn.i/.

Base Word	Phonetic (IPA)	1-1-1 Conditions Check	Suffix Added	Derived Word & Pronunciation
run	/rʌn/ (short u)	1 syl, 1 vowel (u), 1 final cons (n)	-ing (vowel suffix)	running /ˈrʌn.ɪŋ/ (double n)
plan	/plæn/ (short a)	1 syl, 1 vowel (a), 1 final cons (n)	-ing (vowel suffix)	planning /ˈplæn.ɪŋ/ (double n)
sit	/sɪt/ (short i)	1 syl, 1 vowel (i), 1 final cons (t)	-ing (vowel suffix)	sitting /ˈsɪt.ɪŋ/ (double t)
put	/pʊt/ (short u)	1 syl, 1 vowel (u), 1 final cons (t)	-ing (vowel suffix)	putting /ˈpʊt.ɪŋ/ (double t)
rag	/ræɡ/ (short a)	1 syl, 1 vowel (a), 1 final cons (g)	-ed (vowel suffix)	ragged /ˈræɡ.ɪd/ (adj: double g, /-ɪd/)
bat	/bæt/ (short a)	1 syl, 1 vowel (a), 1 final cons (t)	-ed (vowel suffix)	batted /ˈbæt.ɪd/ (double t, /-ɪd/)
rub	/rʌb/ (short u)	1 syl, 1 vowel (u), 1 final cons (b)	-ed (vowel suffix)	rubbed /ˈrʌbd/ (double b, /-d/)
sin	/sɪn/ (short i)	1 syl, 1 vowel (i), 1 final cons (n)	-ed (vowel suffix)	sinned /ˈsɪnd/ (double n, /-d/)
sun	/sʌn/ (short u)	1 syl, 1 vowel (u), 1 final cons (n)	-y (vowel suffix)	sunny /ˈsʌn.i/ (double n)
fun	/fʌn/ (short u)	1 syl, 1 vowel (u), 1 final cons (n)	-y (vowel suffix)	funny /ˈfʌn.i/ (double n)
let	/lɛt/ (short e)	1 syl, 1 vowel (e), 1 final cons (t)	-ing (vowel suffix)	letting /ˈlɛt.ɪŋ/ (double t)
set	/sɛt/ (short e)	1 syl, 1 vowel (e), 1 final cons (t)	-ing (vowel suffix)	setting /ˈsɛt.ɪŋ/ (double t)

MASTER ANSWER KEY FOR EXERCISES 2, 3, & 4 (PAGES 25–26)

EXERCISE 2: GUIDED QUESTIONS

• 1. How many n's in run? In running?
→ In run: one (1) • In running: two (2 / nn).

• 2. How many n's in sun? In sunny?
→ In sun: one (1) • In sunny: two (2 / nn).

• 3. What is added to plan to make planning?
→ An extra n and -ing (or -ning).

• 4. What is added to rub to make rubbed?
→ An extra b and -ed (or -bed).

• 5. What is added to fun to make funny?
→ An extra n and -y (or -ny).

EXERCISE 3 & 4: WORD DERIVATIONS

• Item 2 (Add -ing):
• sit + -ing = sitting /ˈsɪt.ɪŋ/
• put + -ing = putting /ˈpʊt.ɪŋ/
• let + -ing = letting /ˈlɛt.ɪŋ/
• set + -ing = setting /ˈsɛt.ɪŋ/

• Item 3 (Add -ed & -y):
• bat + -ed = batted /ˈbæt.ɪd/
• sin + -ed = sinned /ˈsɪnd/
• fun + -y = funny /ˈfʌn.i/
• sun + -y = sunny /ˈsʌn.i/

TEACHER WARNINGS & COMMON STUDENT PITFALLS:
1. Under-doubling: Students often omit the doubled consonant (*runing, planed, siting), confusing monosyllabic CVC words with CVCe words (hoping vs. hopping).
2. Over-doubling: Watch for students attempting to double words with two vowels (*meett-ing) or two ending consonants (*jumpp-ing). Remind them of the strict 1-1-1 formula.
3. Irregular past-tense vs. Adjective: Note that ragged in Wheeler's text is pronounced /ˈræɡ.ɪd/ (two distinct syllables) as an adjective, whereas rubbed is monosyllabic /ˈrʌbd/.

Assessment Criterion	Exemplary Performance (4)	Needs Reinforcement (1-2)
1-1-1 Rule Recognition	Accurately explains the 1 syllable, 1 vowel, 1 consonant conditions and why doubling is necessary.	Confuses vowel suffixes with consonant suffixes; fails to recognize short vowel necessity.
Word Building (-ing, -ed, -y)	Correctly forms sitting, putting, letting, setting, batted, sinned, funny, sunny with 100% accuracy.	Drops the doubled consonant (*siting, puting) or misspells the root base.
Dictation & Penmanship	Writes all 12 base words and derived forms neatly on baseline with proper ascender/descender balance.	Messy handwriting, letter reversals (b/d in bat, rub, rubbed), or missing letters.