Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · IELTS Momentum Workout · 2026-10-11

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 6.0)

The diagram depicts the working of a man-made arm and the fuctioning of the comprising joints similar to a human arm.

Overall, there are three motors embedded in the mechanical arm whose control is maintained through computer. These motors are fixed at the shoulder, elbow and gripper joints of the arm. These joints allow rotation, flexibility and grip to the arm similar to any human arm.

This arm has a base which allows negligible movement, this part is attached to the mechanical shoulder whose function is to raise or lower the arm due to a motor present in it. Between the shoulder area a circular rod emerges outwards to the left known as pivot, this helps the arm to rotate. Moving upward is another joint named elbow which is supported by another motor this joint assists the arm to be flexible.

Furthermore, a wrist is present identical to the human forearm this allows gripper to move which is the last joint. This joint has build-in sensors which helps to control gripping forces. At the end the arm is drilled with holes and welded to make it sturdy and spray painted.

AI examiner evaluation

Task Achievement / Task Response: Band 5.5

You identify the diagram as a mechanical arm and give an overview of its computer-controlled motors and the functions of several joints. The descriptions of the shoulder, pivot, elbow, wrist and gripper are mostly relevant. However, some key information is missing or misinterpreted: the diagram shows three motors connected to different parts, but does not say they are embedded in the arm or fixed specifically at the shoulder, elbow and gripper. The base is described as usually stationary, not as allowing “negligible movement.” Most importantly, the final sentence says the arm is drilled, welded and spray-painted, whereas these are examples of tasks performed by alternative end-effectors. The comparison with a human arm is also only briefly developed. More accurate coverage of these features would make the summary more complete.

Coherence and Cohesion: Band 6.5

The response has a clear overall arrangement: an introduction and overview are followed by descriptions of the base and joints, then the wrist and gripper. Linking expressions such as “Overall,” “Furthermore,” and “At the end” help signal progression, and the reader can generally follow the explanation. This coherent organisation is a strength. Some connections between ideas are less clear, however. For example, “Between the shoulder area a circular rod emerges outwards to the left” is difficult to relate to the diagram, and the final sentence shifts abruptly from describing the gripper to manufacturing processes. The repeated use of “this” also makes some references imprecise. To strengthen the progression, group the components in the order they appear and use explicit references such as “this joint” or “the end-effector.”

Lexical Resource: Band 6.0

You use a suitable range of topic vocabulary, including “pivot,” “flexibility,” “gripper,” “sensors” and “gripping forces,” which allows you to describe the main components. There are also attempts at more specific phrasing, such as “raises or lower” and “circular rod.” However, some word choices or collocations are inaccurate or unnatural: “the functioning of the comprising joints,” “negligible movement,” and “the arm is drilled with holes and welded” do not clearly convey the diagram’s information. “Identical to the human forearm” is also an imprecise comparison. Spelling errors such as “fuctioning” and “build-in” reduce accuracy. Aim for precise technical descriptions and check spelling; for example, distinguish the arm’s functions from the alternative tasks shown.

Grammatical Range and Accuracy: Band 6.0

You use a mix of simple and more complex sentence forms, including relative clauses such as “whose function is to raise or lower the arm” and “which helps the arm to rotate.” Most of the meaning remains understandable, but some grammatical errors occur. In “whose control is maintained through computer,” the article is missing, while “These joints allow rotation, flexibility and grip to the arm” has an awkward grammatical pattern. There are agreement and verb-form problems in “This joint has build-in sensors which helps,” and “raise or lower” should be parallel with the singular subject. The sentence beginning “This arm has a base” also joins two independent ideas with a comma. Review subject–verb agreement, articles, parallel forms and sentence boundaries while retaining your attempts at complex structures.

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