Grade
K

Guess My Rule: Snow Hat Expressions

What’s the rule to be in the circle?

Addition expressions shown as numerals and 10-frames with purple and green hats. Inside the circle: The expressions are 4 + 1 (4 purple hats + 1 green hat). 7 + 1. And 3 + 1. Outside the circle: The expressions are 4 + 4 (4 purple hats + 4 green hats). 3 + 0. 5 + 3. And 7 + 3.
  1. Some things belong in the circle, and some things do not. What is the rule to decide what belongs in the circle?
  2. Write or draw at least one more example that belongs inside the circle.
  3. Write or draw at least one more example that belongs outside the circle.

What do you notice about the combinations shown?

Make your own rule using numbers or pictures. You can use the circle below or draw your own.
Write or draw some examples that belong inside your circle and some examples that belong outside your circle.

Blank circle with text, 'Rule for my circle:'
Printable Version

Google doc for printing and copying

Reference for Educators

Sample problems and solutions