Have you ever noticed the shapes around you? Today, we’re going to learn about some special shapes called two-dimensional, or 2D, shapes. These shapes are flat, like a piece of paper, and have two important parts: length and width.
Every 2D shape has sides and corners. A side is a straight line on the shape, and a corner is where two sides meet. Sometimes, we call a corner a vertex. Let’s explore some shapes and see how many sides and corners they have!
There’s a group of shapes called quadrilaterals. “Quad” means four, so these shapes all have four sides and four corners. Each one is a little different, but they all belong to the same family.
A square has four sides that are all the same length. It also has four corners. The sides of a square are parallel, which means they are always the same distance apart and never touch.
A rectangle also has four sides and four corners. It has two pairs of sides that are the same length. These sides are opposite each other and are parallel too.
A rhombus looks like a square that’s leaning over. It has four sides that are all the same length and four corners. The opposite sides of a rhombus are parallel.
A kite has four sides and four corners, just like the other shapes. It has two pairs of sides, and each pair is the same length. But unlike the other shapes, a kite’s sides are not parallel.
Let’s look at some shapes that are a bit different from quadrilaterals.
A triangle has three sides and three corners. It’s easy to remember because “tri” means three!
A circle is a round shape made by a curved line. Every point on this line is the same distance from the center. Circles have no corners and no sides.
Now that you know about these shapes, can you find any of them around your classroom? Shapes are everywhere, and it’s fun to spot them!
Shape Hunt: Take a walk around your home or classroom and look for objects that match the 2D shapes you’ve learned about. Can you find a square, rectangle, rhombus, kite, triangle, and circle? Draw a picture of each object you find and label the shape it matches. Share your findings with a friend or family member and see if they can find more shapes!
Shape Art: Use colored paper, scissors, and glue to create a collage of different 2D shapes. Cut out squares, rectangles, triangles, and circles, and arrange them to make a picture or pattern. As you work, think about how many sides and corners each shape has. Display your artwork and explain the shapes you used to someone else.
Shape Story: Imagine that the shapes you learned about are characters in a story. Write a short story or draw a comic strip where these shapes go on an adventure together. What happens when the square meets the circle? How does the triangle help the rectangle? Use your imagination and think about how the shapes’ sides and corners might help them in your story.
Here’s a sanitized version of the provided YouTube transcript:
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Two-dimensional (2D) shapes are flat. They are called two-dimensional because they only have two dimensions: length and width. Shapes have certain features that help us identify what type of shape they are. These features include sides and corners. We get different kinds of shapes depending on how many sides and corners they have.
But what are sides and corners? A straight line in a 2D shape is called a side, and a corner is where two sides meet. A corner can also be called a vertex.
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Did you know that there is a family of shapes called quadrilaterals? “Quad” means four, so this means the quadrilateral family is made up of all those shapes that have four sides and four corners. Each quadrilateral shape has small differences that make them unique from each other.
Let’s have a look at these quadrilateral shapes. This is a square. Here are its four sides and four corners. Each side of a square is the same length as the other sides, and the square also has sides that are parallel.
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What does parallel mean? If two sides are parallel, it means that they are always the same distance from each other and will never touch. This shape is a rectangle. Can you see its four sides and four corners? Rectangles have two pairs of sides that are the same length and opposite to each other. These sides are also parallel.
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This interesting shape is called a rhombus. It can also be referred to as a diamond. A rhombus looks like a square that’s leaning to the side, doesn’t it? Here are its four sides and four corners. Each side is the same length, and the rhombus has its opposite sides parallel too.
If you’ve ever flown a kite before, this shape might look very familiar to you. The name of this shape is a kite. It still has four sides and four corners and has two pairs of sides that are the same length.
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An interesting fact about kites is that they can never have parallel sides. Can you see how the shape of a kite is different from a rhombus? Remember, all four sides of a rhombus are the same length, while a kite has two pairs of sides, and each pair has the same length.
Now that we’ve had a look at the quadrilateral family, let’s introduce some other shapes that are a little different. This is a triangle. All triangles have three sides and three corners. This is easy to remember because “tri” means three.
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A circle is a round shape formed by a curved line where any point on this line is always the same distance from the center. Circles have no corners and no sides.
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There are many different types of shapes; these are just a few of them. Can you spot any of these two-dimensional shapes around your classroom?
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