Rounding a number sometimes creates more problems. A video lesson explains the error intervals for rounded and truncated numbers. The narrator expresses the error as a compound inequality and uses a number line as a reference.

Concepts

intervals, percent error, margin of error, standard error

Show More Show Less

Additional Tags

math

Show More Show Less

Instructional Ideas

• Pause the video at the presentation of each example to ask for ideas to solve it
  
• Create a large number line to the hundredths place to use as a reference

Classroom Considerations

• Students should have a solid understanding of using the number line to the hundredths place

Pros

• Instructor thoroughly explains the concept supporting each interval
• Reviews important background information within the lesson

Cons

• None

Common Core

SL.6.2 SL.7.2 SL.8.2 SL.9-10.2 SL.11-12.2 HSN-Q.A.3 RST.6-8.7 RST.9-10.7 RST.11-12.7