Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · IELTS Momentum Workout · 2026-11-12

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 given diagram illustrates the process of how a mechanical arm works , and how the joints that make up the arm function in the same way as those in human arm.

it is observed that ,in the first step the computer precision control the motors and after that, there are three motors used for the further process. The first motor works for the base usually stationary or occassionally movable. after that , the second motor holds the elbow which allows movement and gives flexibility.

moving onto third motor, which handles the wrist allows gripper or alternative end- effector to flex rotate.Also, there is a gripper which built in sensors to control force . in the last , it is used for the alternative end -effectors spray paint or drill holes and welg metal.

in conclusion , it is apparent from the above discussion that the given diagram shows the process of how a mechanical arm works and there are several steps which take place during this process

AI examiner evaluation

Task Achievement / Task Response: Band 4.0

The response identifies the diagram as a mechanical arm and mentions the computer, three motors, elbow, wrist, gripper and alternative tools. However, several relationships are misreported: the first motor is not described as working for the base, and the second motor does not hold the elbow; the diagram shows motors controlling different arm components. The shoulder and pivot, important features of the arm’s movement, are omitted, and there is no clear overview of how the components work together. The final sentence largely repeats the introduction rather than summarising the main features. The response is also 145 words, below the required 150; the 22 words copied from the prompt do not count toward the total. Add an accurate overview and explain the main joints and their functions.

Coherence and Cohesion: Band 5.5

There is some organisation: the response begins with an introduction, moves through components in separate paragraphs, and ends with a conclusion. Sequencing phrases such as “after that” and “moving onto” help signal progression. However, the order does not consistently match the diagram, and the repeated step-by-step framing makes the description feel mechanical rather than clearly organised by the arm’s structure and functions. Connections between ideas are sometimes unclear, particularly in “the second motor holds the elbow” and the abrupt move to alternative end-effectors. The conclusion repeats the opening instead of drawing the information together. Group the description into a clear overview and a logical account of the control system, joints and end-effectors, using references that make each relationship explicit.

Lexical Resource: Band 5.5

The response uses some relevant task vocabulary, including “motors,” “elbow,” “wrist,” “gripper,” “flexibility” and “alternative end-effectors.” This gives it a minimally adequate range for describing the diagram. However, vocabulary is repetitive and some combinations are imprecise, such as “works for the base,” “holds the elbow” and “it is used for the alternative end-effectors,” which make the component functions difficult to understand. There are also spelling errors, including “occassionally” and “welg,” and inconsistent forms such as “end- effector.” Use precise verbs that describe the diagram’s functions, for example, “controls,” “raises,” “rotates” and “enables,” and check spelling and compound-word formatting before submitting.

Grammatical Range and Accuracy: Band 5.0

The response attempts both simple and longer sentences, but grammatical errors are frequent and sometimes make relationships unclear. For example, “the computer precision control the motors” lacks the appropriate verb form and article, while “there is a gripper which built in sensors” is missing a verb. Agreement and sentence construction are also problematic in “the second motor holds the elbow which allows movement,” where the reference of “which” is unclear. Punctuation and capitalisation are inconsistent, with several comma splices and sentences beginning in lowercase. Build accurate simple sentences first, then combine them with clauses such as “which allows…” only when the reference is clear. Check subject–verb agreement, articles and complete verb phrases.

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