What do you notice?

 You might notice that the number of shaded squares is increasing at each new step.
 You might notice that the number of shaded squares increases by the same amount at each step.
 You might notice that the pattern’s shape stays the same.
What do you wonder?

 You might wonder the number of shaded squares in Step \(4\) or maybe in the \(100^{\text{th}}\) step.
 You might wonder if this pattern continues in the same manner after Step 3.
 You might wonder if there is a rule or equation that can predict the number of shaded squares for any step.