Island 5 Geometric Shapes Exploring 2D and 3D Shapes

Mechanics and Structures

Students will build and explore the properties of three dimensional shapes. Points, lines, and polygons come to life with the geometric shape building set.

Geometric Shapes: Exploring 2D and 3D Shapes

What Students Will Learn:

  • What makes a 2D shape

  • What makes a polygon

  • How to make 3D shapes from 2D shapes

  • How to measure the size of shape

 

What is a 2D shape?

A shape that is 2D has two dimensions: height and width.

Any shape that can be laid flat on a piece of paper is a 2D, or two-dimensional, shape. 

What is a Polygon?

A polygon is a 2D shape. Polygons are made of straight lines that all connect. They are closed shapes, meaning they have no openings on their edges.

What is a 3D shape?

A shape that is 3D has three dimensions - height, width, and depth. Think of depth as a thickness that is added to a 2D shape.

Units of Measurements

Whenever we make a measurement of something, it is important to include the measurement's units.

A unit is the basic amount that your measurement is based on. For example, if you measure the length of a pencil using inches, you would say that your pencil is "6 inches" long. You could write this as 6 inches, 6 in, or 6". 

You could have also measured using centimeters (cm), millimeters (mm), feet (ft), or some other unit of length if you wanted. If you simply said your pencil's length was "6," someone else looking at your measurement would be confused. Did you mean 6 inches? 6 feet? 6 miles?

That difference in distance is like confusing the height of a cup of water with the height of a full-grown human or the tallest mountain in the world! To avoid this confusion, always include units with your measurements.

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