Human skeletal system diagram with numbered parts for labeling.

Let's solve the problem step by step.

The image is a biology worksheet for Grade 11 students under the Secondary Engagement Programme. The task is to label the parts of the human skeletal system shown in the diagram, using the numbered labels (1 to 14) and matching them with the correct bone names from the provided hint list.

---

Step 1: Understand the Hint List

The hints include the following bones:
- Cranium (skull)
- Humerus
- Radius
- Ulna
- Sternum
- Ribs
- Clavicle
- Scapula
- Pelvis (hip)
- Femur
- Tibia
- Fibula
- Spine (vertebral column)
- Jawbone

Note: "Hip" refers to the pelvis, and "spine" refers to the vertebral column.

---

Step 2: Analyze the Diagram

We will go through each number on the skeleton and identify the corresponding bone:

1. (1) – Top of the skull → Cranium
2. (2) – Jawbone → Mandible (jawbone)
3. (3) – Bone at the top of the shoulder → Clavicle (collarbone)
4. (4) – Shoulder blade → Scapula
5. (5) – Upper arm bone → Humerus
6. (6) – Forearm bone on the thumb side → Radius
7. (7) – Forearm bone on the pinky side → Ulna
8. (8) – Breastbone → Sternum
9. (9) – Ribs → Ribs
10. (10) – Spine (backbone) → Spine (vertebral column)
11. (11) – Hip bone → Pelvis (hip)
12. (12) – Thigh bone → Femur
13. (13) – Shin bone → Tibia
14. (14) – Bone behind tibia → Fibula

---

✔ Final Answer:

Now, fill in the blanks:

1. Cranium
2. Mandible (jawbone)
3. Clavicle
4. Scapula
5. Humerus
6. Radius
7. Ulna
8. Sternum
9. Ribs
10. Spine
11. Pelvis (hip)
12. Femur
13. Tibia
14. Fibula

---

✔ Explanation Summary:

This exercise tests knowledge of human anatomy, specifically the major bones of the axial and appendicular skeleton. The diagram shows a full human skeleton with key bones labeled numerically. By identifying anatomical landmarks and using the hint list, we can match each number to its correct bone name.

For example:
- The cranium protects the brain.
- The clavicle connects the arm to the body.
- The femur is the longest bone in the body.
- The tibia and fibula make up the lower leg.

---

✔ Answer Key:

| Number | Bone Name |
|--------|-------------------|
| (1) | Cranium |
| (2) | Mandible |
| (3) | Clavicle |
| (4) | Scapula |
| (5) | Humerus |
| (6) | Radius |
| (7) | Ulna |
| (8) | Sternum |
| (9) | Ribs |
| (10) | Spine |
| (11) | Pelvis (hip) |
| (12) | Femur |
| (13) | Tibia |
| (14) | Fibula |

> Note: Although "jawbone" is mentioned in the hint, the actual bone is the mandible, which is the lower jaw. The upper jaw is the maxilla, but it’s not labeled here.

Let me know if you'd like this as a printable answer sheet!