As per the recommendation of NCF 2005, primary school mathematics curriculum should

Options

A. prepare children for advanced Mathematics.
B. relate to children's everyday experiences
C. focus on procedural knowledge.
D. provide rigour in mathematical concepts.

Explanation

To solve the question regarding the recommendations of the NCF 2005 for the primary school mathematics curriculum, we can analyze each option provided:

1. **Option A: Prepare children for advanced mathematics.**
- This option suggests that the curriculum should focus on preparing students for more complex mathematical concepts. However, the NCF 2005 emphasizes the importance of foundational learning at the primary level. Therefore, this option is incorrect.

2. **Option B: Relate to children's everyday experiences.**
- This option states that the curriculum should connect with the everyday experiences of children. The NCF 2005 indeed recommends that mathematics education should be relevant to students' lives outside the classroom. This approach enhances understanding and retention of mathematical concepts. Thus, this option is correct.

3. **Option C: Focus on procedural knowledge.**
- This option implies that the curriculum should prioritize procedural knowledge, which is about knowing the steps to solve mathematical problems. While procedural knowledge is important, the NCF 2005 advocates for a more holistic approach that includes understanding concepts rather than just memorizing procedures. Therefore, this option is incorrect.

4. **Option D: Provide rigor in mathematical concepts.**
- This option suggests that the curriculum should be strict and rigorous in its approach to mathematical concepts. However, for primary education, the focus should be on making learning engaging and accessible rather than overly rigorous. Thus, this option is also incorrect.

Based on the analysis, the correct answer is:
**B. Relate to children's everyday experiences.**