To solve this problem, we need to understand what a "rectangular array" is. A rectangular array is a group of objects arranged in equal rows and columns, forming a rectangle.
Let's go through each picture one by one:
1.
Stars: The stars are arranged in a circle, not in rows and columns. Therefore, they do not form a rectangular array.
2.
Houses: The houses are arranged in 2 rows and 4 columns, forming a rectangle. This is a rectangular array.
3.
Smiley Faces: The smiley faces are arranged in a pyramid shape, not in equal rows and columns. Therefore, they do not form a rectangular array.
4.
Snails: The snails are arranged in 3 rows and 3 columns, forming a square (which is a type of rectangle). This is a rectangular array.
5.
Triangles: The triangles are arranged in a square shape with some missing in the middle, not in equal rows and columns. Therefore, they do not form a rectangular array.
6.
Balls: The balls are arranged in 4 rows and 5 columns, forming a rectangle. This is a rectangular array.
So, the pictures that show rectangular arrays are the houses, snails, and balls.
Final Answer:
The pictures that show rectangular arrays are the houses, snails, and balls.
Parent Tip: Review the logic above to help your child master the concept of elementary math array.
