………….. is necessary to find out mathematical errors in children.

Correct option is B

S. Ans. (b)

Solution:
A diagnostic test is specifically designed to identify errors or learning gaps in students' understanding of mathematical concepts. It helps teachers pinpoint the root causes of difficulties faced by students, such as misconceptions, procedural errors, or lack of foundational knowledge. This test:

1. Identifies the exact area where a student is struggling.
2. Provides insights into the reasons behind the errors.
3. Assists in tailoring personalized remedial instruction to address specific gaps.

Hence, the correct answer is (b) Diagnostic test.

Information Booster:

1. Diagnostic tests are used before or during teaching to assess students’ learning needs.
2. These tests often include open-ended questions to reveal the reasoning process.
3. Effective diagnostic tests focus on both conceptual understanding and procedural skills.
4. Results from diagnostic tests guide the creation of targeted interventions.
5. They are a critical part of formative assessment in mathematics.
6. Helps improve overall teaching strategies and enhances student learning outcomes.

Additional Information:

• (a) Remedial test: Administered after instruction to evaluate and reinforce learning outcomes, designed to correct specific weaknesses identified earlier.
• (b) Diagnostic test: Focuses on identifying problems and gaps before or during instruction, ensuring targeted intervention.
• (c) Oral test: Assesses immediate responses and verbal explanations but is not designed to diagnose deep-rooted errors.
• (d) Nature test: This is not a standard test type in education and is unrelated to diagnosing mathematical errors.