Band 5.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.5 · IELTS Momentum Workout · 2026-10-25

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 5.5)

The picture ellaborates the working of a mechanical arm and the similiarty between the artifica arm and human arm.

There is a base usually stationary or moved occasionally. On the base there is a pivot that enables arm to rotate and a shoulder which rasises or lowers arm. Abve that there is a elbow which allows movement and gives flexibility to the arm. Wrist allows gripper to flex or rotate. Gripper has built in sensors to control force.

All these parts of artifical or mechanical arm are controled automatically by the computer. The motr is fixed at different positions like shouder ,elbow and gripper. Computer is uesd for the precise control of motors.

Gripper is also called as alternative end-effectors and it has many applications like spray paint, dril holes and weld metals.

AI examiner evaluation

Task Achievement / Task Response: Band 5.0

You identify several relevant components and functions, including the base, pivot, shoulder, elbow, wrist and sensor-equipped gripper. However, the response only partly fulfils the task: it gives little account of how the computer connects to and controls the three motors, and it does not clearly explain the comparison with a human arm. The statement that the gripper is also called an alternative end-effector is inaccurate; the diagram presents alternative end-effectors as options such as a spray gun, drill or welding tool. There is also no clear overview of the arm’s arrangement and operation. The response is below the required 150 words, which limits how fully you can select and report the main features. Develop the overview and explain the motor-control links and alternative tools accurately.

Coherence and Cohesion: Band 5.5

The information is grouped into short paragraphs, moving from the base and joints to computer control and applications, so the reader can follow the general topic. However, the progression is not fully clear: the opening promises a comparison with a human arm, but the following paragraphs do not develop that comparison. Connections between the parts and their control are also under-explained, and the final paragraph shifts to applications without clearly distinguishing the gripper from alternative end-effectors. Linking phrases are sparse, while some sentences read like a list of labels. Organise the response around an overview, the arm’s structure and control, and the interchangeable tools; use clear references such as “these joints” and “at the end of the arm” to show how details relate.

Lexical Resource: Band 5.5

You use relevant task vocabulary, including “pivot,” “flexibility,” “sensors,” and “precise control,” which helps convey the diagram’s subject. However, spelling errors are noticeable, for example “ellaborates,” “similiarty,” “artifica,” “motr,” and “dril.” Some word choices and forms are also inaccurate or awkward: “moved occasionally” is less precise than describing the base as occasionally movable, and “Gripper is also called as alternative end-effectors” mislabels the tools. The vocabulary range is sufficient to name several components, but repetition of “arm” and “allows” and limited description of relationships restrict precision. Check spelling carefully and use the diagram’s terminology consistently, especially for the gripper and alternative end-effectors.

Grammatical Range and Accuracy: Band 5.0

Most sentences use simple present forms to describe functions, and the reader can generally understand the intended meaning. However, the range of sentence structures is limited, and errors occur frequently enough to affect clarity. For example, “there is a elbow” needs the article “an,” while “a pivot that enables arm to rotate” is missing “the” before “arm.” The sentence “The motr is fixed at different positions like shouder, elbow and gripper” has an unclear subject and structure, and the plural “motors” would be needed when referring to the three units. Try combining related details with accurate clauses, such as explaining that the computer controls motors connected to different parts, while checking articles, agreement and punctuation.

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

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