Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · IELTS Momentum Workout · 2026-09-17

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 5.0)

The image demonstretes the process behind the making of robotic arm, also the how a robotic arm is able to function like an actual human arm.

Overall the arm can be divided into multiple parts, such as the base, the elbow and the gripper which is located at the other end of the arm.There are multiple computarized motors being installed in various part of the mechanical arm for diffrent purposes.the arm comes with a base attached to it aswell which holds the weight of the entire arm.

To hold the structure of the arm a base is created which is usually stationary and is rarely moved furthermore a motor is attached to it .The second part of the arm which allows mobility and flexibiltiy so that the arm can be moved in particular way.The third part is the gripper in which a motor is attached to it aswell so it can rotate along with a sensor which controlls the force of the grip allowing it to function like an human arm.There are alternative attachments for the alarm aswell which allows the robot to perform specific tasks such as drilling and welding metal too

AI examiner evaluation

Task Achievement / Task Response — Band 5.0

The student attempts to describe the diagram showing how a mechanical arm works and its human-like joint functions. An overview is present, stating that the arm can be divided into parts like the base, elbow, and gripper, and noting the computerised motors and alternative attachments. However, the response misinterprets the primary focus of the visual data by claiming it demonstrates 'the process behind the making of robotic arm', whereas the diagram illustrates structural components and functional analogies to human limbs. Furthermore, important structural components such as the shoulder, pivot, and wrist are omitted or insufficiently detailed. While the main features are touched upon, the lack of precision in summarising the relationship between the computer, motors, and individual joints limits the development of the response, placing it at a Band 5.0.

Coherence and Cohesion — Band 5.0

The text is divided into three paragraphs, providing a basic structural layout with an introduction, an overview, and a body paragraph. However, the progression of ideas is hindered by a lack of appropriate cohesive devices and poor punctuation. Sentences frequently run together or lack proper terminal punctuation, as seen in '...end of the arm.There are multiple...' and '...base attached to it aswell which holds...'. Paragraphing is attempted, but internal cohesion is mechanical and inadequate. Referencing is sometimes unclear, such as the ambiguous pronoun use in 'in which a motor is attached to it aswell'. Overall arrangement shows some organisation, but the overall progression is disrupted by mechanical and structural faults, justifying a Band 5.0.

Lexical Resource — Band 5.0

The student uses a limited but minimally adequate range of vocabulary relevant to the topic, including words like 'mechanical arm', 'base', 'gripper', 'sensor', and 'welding'. However, there are several noticeable spelling and word-choice errors, such as 'demonstretes' instead of 'demonstrates', 'computarized' instead of 'computerised', and 'alarm' instead of 'arm'. The repetition of simple phrases and structural expressions restricts the lexical scope. Although the terminology allows the reader to grasp the general subject matter, the frequency of spelling mistakes and lexical inaccuracies causes some difficulty, making a Band 5.0 appropriate.

Grammatical Range and Accuracy — Band 4.5

The response exhibits a very limited range of grammatical structures, relying heavily on basic, repetitive sentence patterns joined by conjunctions like 'and' or relative clauses. Attempts at complex sentences are frequently faulty, marred by missing punctuation, run-on sentences, and grammatical incongruities (e.g., 'also the how a robotic arm is able to function' and 'the arm comes with a base attached to it aswell which holds'). Punctuation is largely neglected, with missing periods and commas creating fused sentences. Frequent errors in grammar and punctuation cause noticeable difficulty for the reader, aligning the writing with Band 4.5.

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