Which of the following statements is/are true regarding teaching 'Numbers' at primary level? A. Intuitive understanding of numbers should be encouraged. B. Writing numbers should be taught in sequence. C. Writing of numbers as Numerals should preceed counting. D. Order irrelevance of numbers should be encouraged.

Intuitive understanding of numbers (A) is crucial as it builds conceptual foundations before formal procedures. Order irrelevance (D) — recognizing that the count of objects is the same regardless of the order in which they are counted — is a key principle of counting identified by Gelman and Gallistel. Statement B is incorrect because rigid sequential writing of numbers limits flexibility. Statement C is incorrect because counting should precede writing numerals (oral counting and one-to-one correspondence come first). A and D are correct.