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M.3 Identify rectangles

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Learning About Rectangles

A rectangle is a flat shape with four straight sides and four corners. Two sides are long, and the other two sides are shorter but match each other. Children start by looking at everyday objects shaped like rectangles, such as doors or books.

Example:
  • Show a book cover and say, “This is a rectangle.”
  • Point to a door and notice its four sides and four corners.
Note

Use real-life objects to connect the shape with something familiar. Encourage children to trace the sides with a finger while saying the shape name.

Spotting Rectangles Among Other Shapes

Children need to see how a rectangle is different from other shapes. Comparing it to circles, squares, and triangles builds recognition and confidence in shape sorting.

Try This:
  • “Which shape has four sides but no all sides equal? It is the rectangle.”
  • “Which shape is round and has no corners? That is the circle.”
Note

Use side-by-side comparisons. Ask children to count sides and corners to tell rectangles apart from other shapes.

Sorting Rectangles

Sorting helps children organize shapes into groups. They learn that rectangles belong in the same group because they have the same features.

Example:
  • Put all rectangle blocks in one pile and other shapes in another.
  • Sort flashcards of shapes into “Rectangles” and “Not Rectangles.”
Note

Begin with two groups only to keep sorting simple. Add more shapes when children are confident with rectangles.

Finding Rectangles in Real Life

Children can find rectangles in the classroom, at home, and outdoors. This real-world search makes the shape more meaningful and easier to remember.

Try This:
  • Find windows that are rectangles.
  • Look for notebooks or chalkboards shaped like rectangles.
Note

Take photos or make a small list of rectangle objects. Connecting math to daily life builds curiosity and memory.

Describing Rectangle Features

Describing shapes out loud helps children remember their features. Use words like long, short, straight, and corner to explain rectangles clearly.

Example Sentences:
  • “A rectangle has four straight sides.”
  • “It has four corners where the sides meet.”
Note

Encourage children to repeat shape facts and trace along the sides. Speaking and touching reinforces learning.