Grade
2

Same & Different: Counting Sequences

https://drive.google.com/file/d/1k4gp2n0g9UUdSYlNC1Vp2X0UKKdunhKT/view?usp=sharing

Look at the two pictures. What do you notice?

A. shows numbers in blue, 30, 40, 50, 60, 70, 80, 90, 100… B. shows numbers in blue and red, 100, 95, 90, 85, 80, 75, 70, 65… The blue numbers end with 0. The red numbers end with 5.
  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 that shows a counting sequence. Explain how your picture is the same as pictures A and B, and how it is different.