Grade
1

Same & Different: Counting on Number Lines

Look at the two pictures. What do you notice?

A. shows a blue number line. It starts at 0 then has 3 missing numbers. It ends at 20. B. shows an orange number line. It starts at 16 then has 3 missing numbers. It ends at 20.
  1. How are pictures A and B mathematically the same, and how are they different?
    • A and B are the same because …
    • A and B are different because …
  2. Make a third picture of a number line. Explain how your picture is the same as pictures A and B, and how it is different. 
    You can use the number line below or draw your own.
A number line with five empty boxes.
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Reference for Educators

Sample problems and solutions