Fun and educational "Fiction Books" worksheet where students organize books by the first three letters of the author's last name, featuring a bookshelf, author initials, and playful book characters.

Let's solve this step-by-step.

Understanding the Task

Fiction books are organized on the shelf by the first three letters of the author’s last name. We need to place the given book codes (like AAB, ADD, etc.) into the correct positions on the shelf in alphabetical order.

We are given:
- A shelf with 15 slots (3 rows × 5 columns).
- Some slots already have labels:
- Row 1: AAB, ___, ___, ___, ADD
- Row 2: ALA, ___, ___, ALL, ___
- Row 3: ___, ___, ART, ___, ___
- A list of 10 book codes to place:
ADA, ABE, AUS, ALT, ABL, AUT, ALI, ARC, ARI, ALC

Our goal: Fill in the empty slots in alphabetical order, using the provided codes.

---

Step 1: List All Codes in Alphabetical Order

Let’s sort all the book codes alphabetically:

Given codes:
- ADA
- ABE
- AUS
- ALT
- ABL
- AUT
- ALI
- ARC
- ARI
- ALC

Now sort them:

1. ABL
2. ABE
3. ADA
4. ALC
5. ALI
6. ALT
7. ARC
8. ARI
9. AUT
10. AUS

✔ Sorted list:
ABL, ABE, ADA, ALC, ALI, ALT, ARC, ARI, AUT, AUS

---

Step 2: Identify Existing Labels and Their Positions

We know the shelf has 3 rows, each with 5 slots.

#### Row 1:
- Slot 1: AAB
- Slot 5: ADD

So we need to fill Slots 2, 3, 4.

#### Row 2:
- Slot 1: ALA
- Slot 4: ALL

Fill Slots 2, 3, 5.

#### Row 3:
- Slot 3: ART

Fill Slots 1, 2, 4, 5.

---

Step 3: Place the Codes in Correct Alphabetical Order

Now let’s go through the sorted list and assign each code to its correct position based on alphabetical order.

We'll compare the codes with the existing ones to find where they fit.

#### Full Alphabetical Sequence from AAB to ADD

First, look at the range:
- AAB → ADD

All our codes start with A, so we're in the A section.

Let’s list all possible codes in order between AAB and ADD.

But since only specific codes are given, let's build a sequence:

Start with known values:
- AAB (Row 1, Slot 1)
- Then: ABL, ABE, ADA, ALC, ALI, ALT, ARC, ARI, AUT, AUS
- Then: ADD (Row 1, Slot 5)

Wait — but ADD comes after AUS? Let's check.

Compare:
- AAB < ABL < ABE < ADA < ALC < ALI < ALT < ARC < ARI < AUT < AUS < ADD

Yes! Because:
- AUS = A-U-S
- ADD = A-D-D

So ADD comes before AUS because D < U.

So correct order is:
AAB < ABL < ABE < ADA < ALC < ALI < ALT < ARC < ARI < AUT < AUS < ADD

But wait — that can't be right because ADD is already placed at the end of row 1, and AUS is later.

But D comes before U, so ADD should come before AUS.

So the full sequence from AAB to ADD should include:

- AAB
- ABL
- ABE
- ADA
- ALC
- ALI
- ALT
- ARC
- ARI
- AUT
- AUS
- ADD

But ADD is already at the end of row 1, so AUS must come before ADD?

No — AUS starts with A-U, ADD starts with A-D → D < U → so ADD comes before AUS

Therefore, ADD < AUS

So correct order:
- AAB
- ABL
- ABE
- ADA
- ALC
- ALI
- ALT
- ARC
- ARI
- AUT
- ADD
- AUS

Wait — but ADD is already in slot 5 of row 1, so AUS must be after it.

But AUS > ADD alphabetically.

So the sequence is:
1. AAB
2. ABL
3. ABE
4. ADA
5. ALC
6. ALI
7. ALT
8. ARC
9. ARI
10. AUT
11. ADD
12. AUS

But we don’t have 12 slots — only 15 total, but some are filled.

Let’s list all the available codes again:
- ABL, ABE, ADA, ALC, ALI, ALT, ARC, ARI, AUT, AUS

And the fixed ones:
- AAB (Row 1, Slot 1)
- ADD (Row 1, Slot 5)
- ALA (Row 2, Slot 1)
- ALL (Row 2, Slot 4)
- ART (Row 3, Slot 3)

Now, let’s figure out the correct alphabetical sequence of all codes involved.

List all codes in order:

1. AAB (fixed)
2. ABL
3. ABE
4. ADA
5. ALC
6. ALI
7. ALT
8. ARC
9. ARI
10. AUT
11. ADD (fixed)
12. AUS

Wait — ADD comes after AUT? No!

Compare ADD and AUT:
- A-D-D vs A-U-T → D < U → so ADD < AUT

Similarly, ADD < AUS

So correct order:
1. AAB
2. ABL
3. ABE
4. ADA
5. ALC
6. ALI
7. ALT
8. ARC
9. ARI
10. ADD
11. AUT
12. AUS

But ADD is in Row 1, Slot 5 → so it must be the 5th item.

So the sequence from AAB to ADD must be:
- AAB (1)
- ?
- ?
- ?
- ADD (5)

So the codes between AAB and ADD must be those that come before ADD.

So which of the given codes come before ADD?

Let’s compare each code with ADD:

- ABL: A-B-L → B < D → yes, before
- ABE: A-B-E → B < D → yes
- ADA: A-D-A → D = D, then A < D → so ADA < ADD → yes
- ALC: A-L-C → L > D → no → after
- ALI: A-L-I → L > D → no
- ALT: A-L-T → L > D → no
- ARC: A-R-C → R > D → no
- ARI: A-R-I → R > D → no
- AUT: A-U-T → U > D → no
- AUS: A-U-S → U > D → no

So only these come before ADD:
- ABL
- ABE
- ADA

And AAB is first.

So sequence for Row 1:
- Slot 1: AAB
- Slot 2: ABL
- Slot 3: ABE
- Slot 4: ADA
- Slot 5: ADD

That fits perfectly.

Now, what about the rest?

The remaining codes are:
- ALC, ALI, ALT, ARC, ARI, AUT, AUS

These all come after ADD, so they go in lower rows.

Now look at Row 2:
- Slot 1: ALA
- Slot 4: ALL
- Need to fill Slots 2, 3, 5

Now, what comes after ADD?

Next: ALA? But ALA = A-L-A

Compare with ADD = A-D-D → D < L → so ADD < ALA → yes.

So ALA comes after ADD.

Now, let’s list codes after ADD in order:

After ADD:
- ALA
- ALC
- ALI
- ALT
- ARC
- ARI
- AUT
- AUS

But we also have:
- ALA (fixed), ALL (fixed)

So let’s sort all codes starting with A, from AAB onward:

1. AAB
2. ABL
3. ABE
4. ADA
5. ADD
6. ALA
7. ALC
8. ALI
9. ALT
10. ARC
11. ARI
12. AUT
13. AUS

Wait — is ALL before or after ALA?

ALA vs ALL:
- A-L-A vs A-L-L → same first two letters, third: A < L → so ALA < ALL

So ALA comes before ALL.

So correct order:
1. AAB
2. ABL
3. ABE
4. ADA
5. ADD
6. ALA
7. ALC
8. ALI
9. ALT
10. ARC
11. ARI
12. AUT
13. AUS
14. ALL

Wait — but ALL comes after AUS? No.

ALL = A-L-L
AUS = A-U-S → L < U → so ALL < AUS

So:
- ALA
- ALC
- ALI
- ALT
- ARC
- ARI
- AUT
- ALL
- AUS

Wait — no! ALL comes before AUT?

Compare:
- ALL: A-L-L
- AUT: A-U-T → L < U → so ALL < AUT

Similarly, ALL < AUS

So after ALA, next is ALC, ALI, ALT, ARC, ARI, ALL, AUT, AUS

But we have ART in Row 3, Slot 3.

ART = A-R-T

Where does ART fit?

Compare:
- ALC: A-L-C
- ALI: A-L-I → L < R → so ALI < ART
- ALT: A-L-T → L < R → ALT < ART
- ARC: A-R-C → R = R, C < T → ARC < ART
- ARI: A-R-I → R = R, I < T → ARI < ART
- AUT: A-U-T → U > R → so ART < AUT
- AUS: A-U-S → U > R → ART < AUS
- ALL: A-L-L → L < R → ALL < ART

So ART comes after ALL and ARC, ARI, but before AUT and AUS.

Let’s list all codes in full order:

1. AAB
2. ABL
3. ABE
4. ADA
5. ADD
6. ALA
7. ALC
8. ALI
9. ALT
10. ARC
11. ARI
12. ART
13. ALL
14. AUT
15. AUS

Wait — but ALL = A-L-L, ART = A-R-T → L < R → so ALL < ART

So ART should come after ALL.

But ALL is in Row 2, Slot 4.

So after ALL comes ART.

So order:
- ALA
- ALC
- ALI
- ALT
- ARC
- ARI
- ALL
- ART
- AUT
- AUS

But we have ART in Row 3, Slot 3.

So now let’s map the shelf.

---

Final Alphabetical Order of All Codes

List all codes in order:

1. AAB
2. ABL
3. ABE
4. ADA
5. ADD
6. ALA
7. ALC
8. ALI
9. ALT
10. ARC
11. ARI
12. ALL
13. ART
14. AUT
15. AUS

But we don’t have 15 codes — we have:
- Fixed: AAB, ADD, ALA, ALL, ART
- To place: ABL, ABE, ADA, ALC, ALI, ALT, ARC, ARI, AUT, AUS → 10 codes

Total: 15 slots → 5 per row.

So we need to fill all 15.

But only 10 are listed to place — the others are already there.

So the complete set is:
- AAB, ABL, ABE, ADA, ADD, ALA, ALC, ALI, ALT, ARC, ARI, ALL, ART, AUT, AUS

Yes, 15 codes.

Now sort them:

1. AAB
2. ABL
3. ABE
4. ADA
5. ADD
6. ALA
7. ALC
8. ALI
9. ALT
10. ARC
11. ARI
12. ALL
13. ART
14. AUT
15. AUS

Now map to shelf.

---

Shelf Layout

#### Row 1 (Top row):
- Slot 1: AAB → 1st
- Slot 2: ABL → 2nd
- Slot 3: ABE → 3rd
- Slot 4: ADA → 4th
- Slot 5: ADD → 5th

✔ Done.

#### Row 2:
- Slot 1: ALA → 6th
- Slot 2: ALC → 7th
- Slot 3: ALI → 8th
- Slot 4: ALL → 12th → Wait! That’s not right.

Problem: ALL is 12th, but we’re placing it in Slot 4 of Row 2.

But after ALA (6th), we have:
7. ALC
8. ALI
9. ALT
10. ARC
11. ARI
12. ALL

So ALL should be in Slot 5 of Row 2, not Slot 4.

But currently, Slot 4 is ALL.

So maybe the shelf doesn't follow strict alphabetical order across rows?

Wait — perhaps the shelf is divided by groups.

But the instruction says: "put them in correct order" — meaning alphabetical order.

So likely, the entire shelf is one long sequence.

So let’s assume the shelf has 15 slots in order:

Row 1: 1–5
Row 2: 6–10
Row 3: 11–15

So:

| Position | Code |
|----------|------|
| 1 | AAB |
| 2 | ABL |
| 3 | ABE |
| 4 | ADA |
| 5 | ADD |
| 6 | ALA |
| 7 | ALC |
| 8 | ALI |
| 9 | ALT |
| 10 | ARC |
| 11 | ARI |
| 12 | ALL |
| 13 | ART |
| 14 | AUT |
| 15 | AUS |

Now match to shelf:

#### Row 1:
- Slot 1: AAB ✔
- Slot 2: ABL ✔
- Slot 3: ABE ✔
- Slot 4: ADA ✔
- Slot 5: ADD ✔

#### Row 2:
- Slot 1: ALA ✔
- Slot 2: ALC ✔
- Slot 3: ALI ✔
- Slot 4: ALL ✘ → Should be ARC? Wait no.

Wait — position 10 is ARC, but we have ALL in Slot 4.

Conflict.

But we were told that ALL is in Slot 4 of Row 2.

So perhaps the order is not strictly sequential across rows.

Maybe the shelf is grouped by first letter.

But all codes start with A.

Alternatively, maybe the shelf is arranged in columns?

But the problem says “put them in correct order” — so likely alphabetical order.

But if ALL is fixed in Row 2, Slot 4, and we have to place the others, perhaps we need to respect the fixed ones.

Let’s list the positions of the fixed codes:

- AAB: Row 1, Col 1 → position 1
- ADD: Row 1, Col 5 → position 5
- ALA: Row 2, Col 1 → position 6
- ALL: Row 2, Col 4 → position 10
- ART: Row 3, Col 3 → position 13

Now, from earlier, the correct alphabetical order is:

1. AAB
2. ABL
3. ABE
4. ADA
5. ADD
6. ALA
7. ALC
8. ALI
9. ALT
10. ARC
11. ARI
12. ALL
13. ART
14. AUT
15. AUS

So:
- Position 1: AAB → matches
- Position 5: ADD → matches
- Position 6: ALA → matches
- Position 10: ARC → but ALL is in position 10 → conflict
- Position 13: ART → matches

But ALL is in position 10, but should be in position 12.

So unless the shelf is not ordered sequentially, we have a problem.

Wait — perhaps the shelf is not in left-to-right, top-to-bottom order.

But typically, shelves are read left to right, top to bottom.

Alternatively, maybe the rows are sorted independently?

But that doesn't make sense.

Another idea: perhaps the first letter is the same, so we sort by second letter, then third.

Let’s try grouping by second letter.

List all codes:

- AAB: A-A-B
- ABL: A-B-L
- ABE: A-B-E
- ADA: A-D-A
- ADD: A-D-D
- ALA: A-L-A
- ALC: A-L-C
- ALI: A-L-I
- ALT: A-L-T
- ARC: A-R-C
- ARI: A-R-I
- ALL: A-L-L
- ART: A-R-T
- AUT: A-U-T
- AUS: A-U-S

Now group by second letter:

- Second letter A: AAB
- Second letter B: ABL, ABE
- Second letter D: ADA, ADD
- Second letter L: ALA, ALC, ALI, ALT, ALL
- Second letter R: ARC, ARI, ART
- Second letter U: AUT, AUS

Now within each group, sort by third letter.

- AAB: only one
- B: ABE, ABL → E < L → ABE, ABL
- D: ADA, ADD → A < D → ADA, ADD
- L: ALA, ALC, ALI, ALL, ALT → third letters: A, C, I, L, T → so:
- ALA (A)
- ALC (C)
- ALI (I)
- ALL (L)
- ALT (T)
- R: ARC (C), ARI (I), ART (T) → C < I < T → ARC, ARI, ART
- U: AUT (T), AUS (S) → S < T → AUS, AUT

So overall order:

1. AAB (A-A-B)
2. ABE (A-B-E)
3. ABL (A-B-L)
4. ADA (A-D-A)
5. ADD (A-D-D)
6. ALA (A-L-A)
7. ALC (A-L-C)
8. ALI (A-L-I)
9. ALL (A-L-L)
10. ALT (A-L-T)
11. ARC (A-R-C)
12. ARI (A-R-I)
13. ART (A-R-T)
14. AUS (A-U-S)
15. AUT (A-U-T)

Now, this is the correct alphabetical order.

Now, map to shelf:

- Row 1: Slots 1–5
- 1: AAB
- 2: ABE
- 3: ABL
- 4: ADA
- 5: ADD

But the shelf has:
- Slot 1: AAB ✔
- Slot 5: ADD ✔
- Slots 2,3,4: blank

So we need to put ABE, ABL, ADA in Slots 2,3,4.

In order:
- Slot 2: ABE
- Slot 3: ABL
- Slot 4: ADA

But wait — ABE < ABL < ADA

So:
- Slot 2: ABE
- Slot 3: ABL
- Slot 4: ADA

Yes.

#### Row 2:
- Slot 1: ALA ✔ (6th)
- Slot 4: ALL ✔ (9th)
- Slots 2,3,5: blank

From order:
- 7: ALC
- 8: ALI
- 9: ALL
- 10: ALT
- 11: ARC

So:
- Slot 2: ALC (7th)
- Slot 3: ALI (8th)
- Slot 4: ALL (9th) ✔
- Slot 5: ALT (10th)

But we have only 5 slots, so:
- Slot 1: ALA
- Slot 2: ALC
- Slot 3: ALI
- Slot 4: ALL
- Slot 5: ALT

Then Row 3:
- Slot 3: ART (13th)
- Slots 1,2,4,5: blank

From order:
- 11: ARC
- 12: ARI
- 13: ART
- 14: AUS
- 15: AUT

So:
- Slot 1: ARC
- Slot 2: ARI
- Slot 3: ART ✔
- Slot 4: AUS
- Slot 5: AUT

Perfect.

Now, let’s write the final answer.

---

Final Shelf Filling

#### Row 1:
- Slot 1: AAB
- Slot 2: ABE
- Slot 3: ABL
- Slot 4: ADA
- Slot 5: ADD

#### Row 2:
- Slot 1: ALA
- Slot 2: ALC
- Slot 3: ALI
- Slot 4: ALL
- Slot 5: ALT

#### Row 3:
- Slot 1: ARC
- Slot 2: ARI
- Slot 3: ART
- Slot 4: AUS
- Slot 5: AUT

Now, the codes to place are:
- ABE, ABL, ADA, ALC, ALI, ALT, ARC, ARI, AUS, AUT

They all fit.

---

✔ Final Answer:

Fill the shelf as follows:

#### Row 1:
- [AAB] → [ABE] → [ABL] → [ADA] → [ADD]

#### Row 2:
- [ALA] → [ALC] → [ALI] → [ALL] → [ALT]

#### Row 3:
- [ARC] → [ARI] → [ART] → [AUS] → [AUT]

This is the correct alphabetical order based on the first three letters of the author's last name.