[方法探讨] 请教scott foresman decodable books 使用方法

这套教材的decodable book很多，特别细致 这是一级的目录，二级，三级也有，配合自然发音教材应该怎么使用？
Unit 1
1. Short a
Final ck
2. Short i
Final x
3 Short o
-s Plurals (s/z/)
4. Infl ected ending -s
Infl ected ending -ing
(without spelling changes)
5. Short e
Initial consonant blends (CCVC)
6. Short u
Final consonant blends (CVCC)
Unit 2
7. Digraphs sh, th
Sound of a in ball, walk
8. Long a (CVCe)
c/s/ and g/j/ (initial and as in -ace, -age)
9. Long i (CVCe)
Digraphs wh, ch, tch
10. Long o (CVCe)
Contractions n’t, ‘m ‘ll
11. Long u (CVCe) and Long e (CVCe)
Infl ected ending -ed (3 pronunciations:
/d/, /t/, /ed/)
(without spelling changes)
12. Long e: e, ee
Syllables VC/CV (as kitten)
Unit 3
13. Vowel sounds of y: long i, long e
Long vowel pattern CV (as me, hi, go)
14. Compound words
Final ng and nk
(-ang, -ing, -ung; -ank, -ink, -unk)
(NOTE: Begin word family/onset-rime
blending)
15. R-controlled or, ore
(NOTE: Both sound-by-sound blending and
onset-rime through Week 18)
Ending -es; plural -es
16. R-controlled ar
Infl ected endings -ed, -ing (Spelling change:
double fi nal consonant)
17. R-controlled er, ir, ur
Contractions ‘s, ‘ve, ‘re
18. Comparative endings -er, -est
dge /j/
Unit 4
19. Long a: ai, ay
(NOTE: First cover sound-by-sound blending
of new letter-sound; then move immediately
to phonograms)
Possessives (singular and plural)
20. Long e: ea
Infl ected endings (all studied to date)
(spelling change: y to i)
21. Long o: oa, ow
Three-letter consonant blends
22. Long i: ie, igh
Silent consonants kn/n/ and wr/r/
23. Vowel patterns ew, ue, ui
Compound words
(blending multisyllabic words)
24. Vowels oo in moon
Suffi xes -ly, -ful
(blending multisyllabic words)
GRADE 1
Scott Foresman Reading Street 3
Unit 5
25. Vowel diphthong ow/ou/
Syllables: consonant + le
26. Vowel diphthong ou/ou/
Syllables: V/CV and VC/V
(open and closed: pi/lot, lem/on)
27. Vowels oo as in book
Infl ected endings -s, -es, -ed, -ing
(spelling change: drop e before -ed, -ing)
28. Vowel diphthongs oi, oy /oi/
Suffi xes -er, -or (agentive)
(blending multisyllabic words)
29. Vowels aw, au (as in saw, auto)
Short e: ea
30. Prefi xes un-, re-
(blending multisyllabic words)
Long vowel pattern o(st), o(ld), i(nd), i(ld)