The abstract notion of domain and range can be troublesome. A math lesson explains the concept of determining domain and range from a graph. The instructor makes clear connections between the graph and the numeric values. There are 29 videos in this series on functions.

Concepts

domain, functions

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Additional Tags

math

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Instructional Ideas

• Instruct pupils to watch the video, and then give them problems to complete in collaborative groups
• Record answers on the board to check for understanding

Classroom Considerations

• The lesson requires Internet access to watch a YouTube video
• An understanding of interval notation is required
• There are 29 videos in the  series on functions

• This video is hosted on YouTube

Pros

• The video uses color aids in the explanation of the domain and range and breaks up the information into manageable parts

Cons

• Resource only uses one example; a variation in examples would be beneficial for a complete understanding of the concept

Common Core

HSF-IF.A.1