One-to-one correspondence in counting collections to 20
Exercise Difficulty 2 ~1 min math.gK.f.ns.one_to_one.ex_02

Cross Out Picture

Prompt

Look at this picture. Count the ducks. Cross out each duck with your pencil as you count. How many ducks?

M-K-F-EX-08-A Illustration
Worksheet illustration: a pond with 10 cartoon yellow ducks scattered (not in a line) in the water and on the bank. Ligh

Worksheet illustration: a pond with 10 cartoon yellow ducks scattered (not in a line) in the water and on the bank. Light blue pond, green grass, ducks of varying sizes. Pencil-cross-out marks shown in faint gray as a guide for self-checking.

How it's presented
mode worksheet picture
picture
10_ducks_in_pond_scattered_arrangement
Answer criteria
type cardinal answer
rubric
Crosses out each duck exactly once; arrives at 10.
expected
10
Hints
  1. Start at one corner and work in order.
  2. Make sure each duck has a pencil mark before you move on.
Misconceptions to watch
  • Misses a duck at the edge of the picture.
  • Counts a duck twice when working in scattered arrangement without crossing-out.
Used in lessons