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Intro to 2D Shapes
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What you will learn from this videoWhat you will learn
- We’ll learn how to identify shapes like triangles, squares and circles!
- We'll also learn that the shape of an object doesn't change even if we make it bigger or turn it.
- And we'll explore how this knowledge can help us send cards to our friends, earn badges, and even get honey from bees!
- Discussion Questions
Before Video
[Draw a rectangle on the board.] What is a “side” of a shape? Point to the sides on this shape.ANSWERA side is a straight line on the outside of the shape.
A corner is a point on the outside of the shape where two sides meet.
It has 3 sides.
It has 3 corners.
No. It does not have any sides or corners.
After Video
[Draw a square on the board] What shape is this?ANSWERA square.
a rectangle.
Yes. It still has no sides and no corners, so it is still a circle.
Yes. It still has four sides and four square corners, so it is still a rectangle.
A shape is a hexagon if it has six sides.
- Vocabulary
- Circle DEFINE
A round shape with no sides or corners.
- Round DEFINE
Shaped like a circle.
- Side DEFINE
A straight line on the outside of a shape.
- Corner DEFINE
Where two sides meet.
- Triangle DEFINE
A shape with three sides.
- Rectangle DEFINE
A shape with four sides and four square corners.
- Square corner DEFINE
A special type of corner. It is the type of corner in a square or rectangle. When two sides are going in the exact opposite direction (such as one going up and down and the other going side to side), the corner they meet at is called a square corner.
- Square DEFINE
A special type of rectangle. It has four sides and four square corners. All of the sides are the same length.
- Hexagon DEFINE
A shape with six sides.
- Circle DEFINE
- Practice Word Problems
- Practice Number Problems
- Lesson Plan
- Teacher Guide
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Level 1
[Draw a circle on the board] What shape is this? How do you know?
Level 2
[Draw a triangle sitting on a side on the board] What shape is this? How do you know?
Level 3
[Draw a bigger triangle, sitting on a vertex, on the board.] What shape is this? How do you know?
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