Which concept is illustrated when the count of objects remains the same even if the objects are rearranged?

Which concept is illustrated when the count of objects remains the same even if the objects are rearranged?

• A. Subitizing
• B. One-to-one correspondence
• C. Affix
• D. Number conservation

Answer: (D)

Number conservation is being tested here: the idea that the number of objects stays the same even when they are rearranged. A set has a fixed quantity, no matter how its items are arranged—for example, ten buttons in a row or scattered still count as ten. This understanding shows that quantity is a property of the group, not of its appearance. Subitizing is about instantly recognizing small quantities without counting, which isn’t about maintaining the same total when layout changes. One-to-one correspondence is a counting method to ensure every object is counted once, not a test of whether the total changes with arrangement. Affix is not related to counting in this context. So the correct concept is number conservation.

Number conservation is being tested here: the idea that the number of objects stays the same even when they are rearranged. A set has a fixed quantity, no matter how its items are arranged—for example, ten buttons in a row or scattered still count as ten. This understanding shows that quantity is a property of the group, not of its appearance. Subitizing is about instantly recognizing small quantities without counting, which isn’t about maintaining the same total when layout changes. One-to-one correspondence is a counting method to ensure every object is counted once, not a test of whether the total changes with arrangement. Affix is not related to counting in this context. So the correct concept is number conservation.