Number sense — the intuitive understanding of numbers, their relationships, and how they can be used — is the foundation of all mathematical learning. Understanding how children develop number sense helps parents and teachers provide the right support at the right time.

Number Sense Begins in Infancy

Remarkably, number sense begins in infancy. Research has shown that babies as young as a few months old can distinguish between small groups of objects. This innate number sense is the seed from which all later mathematical understanding grows. Parents support this early development simply by counting with their children, pointing out quantities, and using number words in everyday conversation.

Stages of Number Development (Ages 2 to 8)

Between ages 2 and 4, children develop the ability to count. This happens in stages:

1. Learning number words in order (one, two, three...)
2. Using these words to count objects (one-to-one correspondence)
3. Understanding that the last number said represents the total quantity (cardinality)

By age 4 or 5, most children can count to at least 20, recognise written numerals, understand that numbers have an order, and begin to grasp concepts like "more than" and "less than". These skills form the immediate foundation for addition and subtraction.

Place value — understanding that the position of a digit determines its value — is one of the most challenging number concepts children learn. The jump from single-digit numbers to understanding that the "2" in "23" means twenty requires a conceptual leap that takes time and practice. Using physical materials like base-ten blocks or grouped objects helps make this abstract concept concrete.

Signs a Child Needs Additional Support

Common signs that a child may need additional support with number sense include:

• •Difficulty counting objects accurately
• •Confusion about the order of numbers
• •Inability to estimate quantities
• •Reliance on counting from 1 for every addition problem (rather than counting on)
• •Anxiety or avoidance when faced with number tasks

Early identification and targeted support can prevent these difficulties from compounding over time.

Activities That Build Number Sense

Activities that support number sense development include:

• •Playing board games with dice (builds subitising — recognising quantities without counting)
• •Cooking with measurements to make numbers concrete
• •Playing shop with coins
• •Sorting and grouping objects by different attributes
• •Using educational games that provide adaptive, feedback-rich practice

Number sense continues to develop throughout childhood. The foundations laid in the early years support increasingly complex mathematical thinking in later school years.