The image shows a rectangular array of small squares. To determine the number of equal parts:

• There are 5 rows and 4 columns of small squares, which gives us a total of $5 \times 4 = 20$ equal parts.
• The name for each of these parts is a square.

So, the answer is:

• 20 equal parts
• Each part is a square.

Do you need further details or have any questions about this problem?

Here are some related questions:

1. What is the difference between a square and a rectangle in terms of area division?
2. How can we use this concept to divide a rectangle into smaller parts?
3. How does this concept relate to fractions?
4. Can you calculate the fraction of shaded parts if some squares were shaded?
5. What happens if the number of rows or columns changes?

Tip: Practice dividing different shapes into equal parts to strengthen your understanding of fractions!