Developing Number Sense: Principles of Counting
All concepts of number sense need to be actively taught.
The one-to-one correspondence principle ensures we accurately count objects one at a time.
Movement is Magnitude Principle
Building towers with blocks, lego or any type of manipulative that is of a consistent height helps teach kids the visual concept of movement is magnitude.
Graphing with charts is a visual representation where children can see this concept. Especially when the topic is related to their personal lives. For example, how many people walk to school versus how many people take the bus?
For children ready for skip counting, moving manipulatives two at a time while they are counting can help them understand the consistency of this principle.