Number Line 0—30
Durable plastic strip; the single blocks can be laid flat along the top surface. One face shows the numbers 0—30; the opposite face shows only hash marks. Tabs at each end keep blocks from sliding off. This type of number line is much more concrete than the traditional number line, because the students are counting real things blocks rather than the abstraction of a line or a space between lines.
Number Line 0—50
Number line similar to the previous one, but designed for the blocks to stand on their long edges, allowing children to count to 50 in a reasonable space.