Band 5.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.5 · IELTS Momentum Workout · 2026-11-11

IELTS Writing Task 1 question

The diagram below shows how a mechanical arm works, and how the joints that make up the arm function in the same way as those in a human arm. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Student answer (Band 5.5)

The figure illustrate the process of mechanical arm and compare to joints that develop the arm function as the human arm work.

Overall, in this diagram they they show the all factors that include on motor, elbow, pivot, shoulder, wrist and gripper. They aslo represent the spray painting,drill machine and weld metal.

Firstly, the computer gives three motors and one motor attached with shoulder other link with elbow and last attract with gripper. The elbow is joint point and it allow to give flexibility to motor point after that the pivot enable to rotate in addition, the shoulder raises the bottom arm. Furthermore, the wrist authorise to gripper for flexing moving around and it also let to alternative end-effector to flex rotate. However, at the end the gripper built in sensors control face. The gripper also demonstrte the alternative end effectors that consist on a spray paint, drill holes and weld metals.

AI examiner evaluation

Task Achievement / Task Response: Band 5.5

You identify several relevant components, including the computer, motors, elbow, pivot, shoulder, wrist, gripper and alternative tools, so the response is recognisably about the diagram. However, the task asks for a summary of how the arm works and how its joints compare with a human arm; that comparison is not explained, and there is no clear overview of the arm’s overall arrangement or operation. Some details are also inaccurate or unclear: the computer controls the motors rather than “gives” them, and the shoulder raises and lowers the arm, not “the bottom arm.” The functions of the base and the gripper’s force sensors could also be reported more precisely. Select the main structural features and describe their relationships accurately.

Coherence and Cohesion: Band 5.0

The response has a basic paragraph structure, with an opening, an overview-like paragraph and a longer description, and it attempts to guide the reader with “Firstly,” “Furthermore” and “However.” Nevertheless, the progression is not consistently clear: the overview lists components without explaining how they relate, and the final paragraph moves between motors, joints and end-effectors without a clear sequence. Some linking expressions do not show the intended relationship, such as “However” before the gripper description. Repetition of “gripper” and “alternative end-effectors” also makes the account feel circular. Organise the description from the computer and base upward along the arm, then explain the interchangeable tools, using links that accurately signal sequence or addition.

Lexical Resource: Band 5.5

You use some task-relevant vocabulary, including “pivot,” “flexibility,” “rotate,” “sensors” and “end-effectors,” which helps identify the diagram’s parts and functions. However, word choice and spelling are often inaccurate enough to make meaning less clear. Examples include “attract” for the motor’s connection, “authorise” for the wrist’s function, “control face” for control of force, and “demonstrte.” Phrases such as “gives three motors” and “drill machine” are also imprecise in this context. Aim to use the diagram’s functional language accurately—for example, say that the computer controls the motors and that the gripper’s sensors regulate force. Proofread spelling and avoid repeating the same component names when a clear reference is possible.

Grammatical Range and Accuracy: Band 5.0

The response attempts both simple and longer sentences, including clauses linked with “that,” “after that” and “in addition.” However, the longer constructions are often faulty, and errors in agreement, verb forms, articles and sentence boundaries occur frequently. For example, “The figure illustrate” needs subject–verb agreement, while “it allow” and “the wrist authorise” also require matching verb forms. The opening phrase “compare to joints” is not grammatically complete, and the sentence beginning “The elbow is joint point” combines several ideas without clear punctuation. These problems sometimes make relationships difficult to follow. Practise accurate simple sentences first, then combine them with controlled clauses such as “The pivot allows the arm to rotate.”

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