Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · IELTS Momentum Workout · 2026-08-25
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)
This diagram reveals the statics how mechanical arm works and how the joints that makeup the arm function.
It can be seen clearly that this function started from a computer hows work like a human.This given diagram illustrated that the computer is the main hub of this function.Which control the motors. Three type of motors are connected with the computer.where the one motor allow the elbow movements to connect directly the shoulder which is raises.The third one motor or battery is used to hold the sensor control force.The base of this mechanism is movable the allow the griper to rotate and move to the any given instruction.
in conclusion the elbow and the shoulder part is work like a human arm.Every step play the role to making this mechanism.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 4.5 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 4.5
The response fails to meet the minimum word count requirement of 150 words, which significantly impacts the task achievement score. While the student attempts to describe the mechanical arm, the description is superficial and lacks a clear overview of the process. The comparison between the mechanical and human arm is mentioned but not developed with sufficient detail. Key features of the diagram, such as the specific function of the sensors or the interaction between the motors, are described in a fragmented and unclear manner. To improve, the student needs to provide a more comprehensive summary of the visual data and ensure the length requirement is met to allow for full development of ideas.
Coherence and Cohesion — Band 5.0
The response lacks logical progression. The paragraphing is ineffective, with the introduction and body paragraphs blending into a disjointed structure. Cohesive devices are either missing or misused, such as the awkward transition 'Which control the motors' starting a new sentence. The use of referencing is often unclear, making it difficult for the reader to follow the relationship between the computer, the motors, and the arm components. The conclusion is abrupt and does not effectively summarize the main points. Improved use of linking words and a more structured approach to paragraphing are essential for better flow.
Lexical Resource — Band 5.0
The vocabulary range is limited and repetitive. The student relies on basic terminology such as 'work', 'function', and 'part', which does not demonstrate the range required for an academic task. There are several instances of word-choice errors, such as 'statics' instead of 'diagram' or 'mechanism', and 'griper' (spelled incorrectly as 'griper' instead of 'gripper'). The phrasing is often unnatural, which hinders the clarity of the technical description. To achieve a higher band, the student should focus on using more precise, topic-specific vocabulary related to mechanical processes and engineering.
Grammatical Range and Accuracy — Band 5.0
The response contains frequent grammatical errors that occasionally impede communication. There are issues with subject-verb agreement, such as 'the elbow and the shoulder part is work', and incorrect sentence structure, such as 'This given diagram illustrated that the computer is the main hub of this function.Which control the motors.' Punctuation is also inconsistent, with missing spaces after periods and incorrect capitalization. The range of sentence structures is very limited, consisting mostly of simple sentences with errors in complex constructions. A focus on basic sentence construction, correct verb tenses, and proofreading for punctuation errors is necessary to improve accuracy.
See this exact question answered at other band scores — the same prompt compared across bands.
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