Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · IELTS Momentum Workout · 2026-09-26

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)

he diagram represents 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.

Overall, three motors to make arm works which have control by computer with precision way. the first motor for pivot and shoulder, second for elbow, and third for gripper and writs. Writs allows alternative end-effctors to play various role for spray painting , metal welding and hole drilling.

Computer is control three motors with precision way. The first motor is for pivot and shoulder, to shoulder raising and lowering arms and pivot enable arms to rotating. second motor contribute elbow to allow movement and gives them flexibility. third motor for gripper and wrist, gripper built in sensor to control force, and wrist allow gripper to rotating. Writs allows alternative end-effectors like spray paint , drill whole and weld metal.

AI examiner evaluation

Task Achievement / Task Response: Band 5.0

The response attempts to summarize the mechanical arm diagram, covering key components such as the computer control, the three motors, the pivot, shoulder, elbow, wrist, and gripper, as well as the alternative end-effectors. However, the text suffers from a major structural penalty because it falls short of the 150-word minimum, containing only 147 words. Furthermore, the information is somewhat repetitive, as the second paragraph essentially re-states the details from the overview and first paragraph without significantly extending the analysis. While the main features are identified, the development is limited and repetitive, placing it within Band 5.0.

Coherence and Cohesion: Band 5.0

The response is divided into paragraphs, but the organization is hindered by the repetitive structure where the second body paragraph restates the points made previously. Cohesive devices are minimal and sometimes inaccurate or missing entirely, leading to disjointed sentences such as 'the first motor for pivot and shoulder, second for elbow, and third for gripper and writs.' Referencing is occasionally unclear, and there is no clear progression of ideas because the text loops back on itself. Paragraphing is attempted but poorly executed, warranting a Band 5.0 score for coherence and cohesion.

Lexical Resource: Band 5.0

The vocabulary used is quite basic and repetitive, with noticeable errors in word choice and spelling, such as 'writs' instead of 'wrist', 'effctors' instead of 'effectors', and 'whole' instead of 'hole'. The student attempts some less common technical terms from the prompt, like 'end-effectors' and 'pivot', but struggles with accurate collocation and form, such as 'have control by computer with precision way'. The lexical range is limited and minimally adequate for the task, resulting in a Band 5.0.

Grammatical Range and Accuracy: Band 4.5

The response displays a very limited range of grammatical structures. Most sentences contain frequent, noticeable errors that affect clarity, such as missing verbs ('three motors to make arm works which have control by computer') and incorrect word forms ('to shoulder raising and lowering arms'). Complex structures are rarely attempted accurately, and basic subject-verb agreement and prepositional errors are widespread throughout the text (e.g., 'Computer is control three motors'). Communication is hindered by these frequent grammatical inaccuracies, aligning with Band 4.5.

See this exact question answered at other band scores. The same prompt compared across bands.

Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.