What is the easiest way to count? Use the structure of our number system to count–and count on–quickly and accurately.
Mathematicians in Room 123 recently explored 5- and 10-structures, which are integral to our number system. They used rekenreks to do so; rekenreks are math tools that use colored beads to highlight these structures. This learning will support the development of number sense as well as efficient strategies for adding and subtracting.
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