Teach young mathematicians to keep an eye on boundaries! Young scholars use a video lesson to explore the possible values of numbers rounded to varying place values. The instructor provides an explanation to several contextual problems where values have been rounded.

Concepts

rounding, boundaries, inequalities

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Additional Tags

math

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Instructional Ideas

• Use a number line to add a visual representation to the concept
• Extend the lesson to include the use of interval notation

Classroom Considerations

• Requires a solid understanding of rounding

Pros

• Practice problems offer questions with varying levels of difficulty
• Highlights the difference between inequalities with and without the equal sign

Cons

• None

Common Core

SL.6.2 SL.7.2 SL.8.2 5.NBT.A.4 RST.6-8.7