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Lesson Planet
This Area Sums: Estimation with Rectangles interactive also includes:
- Sigma Notation
- Area Under a Graph
- Student Reference
- Join to access all included materials
The more rectangles, the better the estimate. Using the interactive, pupils explore estimating the area under a curve using left-hand sums. Learners respond to challenge questions on how to get better estimates using the same technique.
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Concepts
Additional Tags
Instructional Ideas
- Have class members draw concave up and down curves and create left-hand and right-hand sums using different colors
Classroom Considerations
- The class should be familiar with summation notation
- Requires users to sign up for a free account before accessing the interactive
Pros
- The additional material provides more examples
- Allows students to change the number of rectangles to visualize what is happening
Cons
- None