Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · IELTS Momentum Workout · 2026-09-19

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 illustrates how the mechanical arm function and the joints that make up the arm function in the same way as those in a human arm .

Overall , the mechanical arm is control by a computer and powered by several motors.These motors allow the arm to move in different direction and perform various tasks, much like the muscles and joints in a human arm . The arm can also be fitted with different tools depending on the task required.

Initially , the process begins with a computer , which provide precise control over the motors . these motora are positioned at different joints of the mechanical arm and are responsible for producing movement .By controlling the motors , the computer enables the arm to bend , rotate and move its different section accurately.

At the end of the arm , different attachments can be used for particular purposes.For example , the diagram shows a spray-painting tools and drilling tool. This means that the same mechanical arm can perform different typesof work simply by changing its attachments.

The mechanical joints work in a similar way to those in a human arm . The motors act like muscles by producing movement , whlie the joints allow the different section of the arm to bend and rotate . Consequently , the mechanical arm can carry out precises and repititive tasks that would otherwise require human effort.

AI examiner evaluation

Task Achievement / Task Response — Band 6.0

The student covers all major parts of the diagram, successfully identifying the core components of the mechanical arm, such as the computer, motors, base, pivot, shoulder, elbow, wrist, and gripper, as well as the alternative end-effectors like spray-painting and drilling tools. The overall trend or summary is captured adequately in the introduction and conclusion, noting the comparison to human anatomy and the programmable versatility of the arm. However, some minor details from the prompt's layout are generalized or slightly simplified, placing this response comfortably at a Band 6.5 to 7.0 range for fully covering the requirements with clear, relevant feature selection.

Coherence and Cohesion — Band 6.0

The text demonstrates a clear logical organization with a recognizable introduction, body paragraphs detailing the components, and a concluding synthesis. Paragraphing is used appropriately to separate distinct ideas, such as the computer controls, attachments, and the human arm comparison. Cohesive devices like 'Initially', 'For example', and 'Consequently' are utilized, though there are minor mechanical transitions and occasional punctuation spacing issues before periods and commas. Overall, the progression of information flows reasonably well, supporting a Band 6.5.

Lexical Resource — Band 5.5

The student displays an adequate range of vocabulary suitable for describing a technical diagram, using terms such as 'attachments', 'precision control', 'alternative end-effectors', and 'versatility'. However, there are noticeable lexical and spelling inaccuracies, such as 'is control' instead of 'is controlled', 'different direction' instead of 'different directions', and spelling slips like 'precises' instead of 'precise' and 'repititive' instead of 'repetitive'. These do not heavily impede communication, placing the vocabulary score at a solid Band 6.0.

Grammatical Range and Accuracy — Band 5.5

The response exhibits a mix of simple and complex sentence structures, attempting relative clauses and participial phrases (e.g., 'which provide precise control', 'are responsible for producing movement'). Grammatical control fluctuates, featuring errors such as subject-verb agreement issues ('these motora are'), missing third-person singular markers ('how the mechanical arm function'), and punctuation/spacing flaws (extra spaces before punctuation marks). Although these errors occur frequently, they rarely impede the overall meaning, justifying a Band 6.0.

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.