Curated OER
Worksheet 30 - Intervals
In this interval worksheet, pupils divide functions into intervals. They computer the upper and lower sums for the partition. This two-page worksheet contains approximately eight multi-step problems.
Math Graphs
Houghton Mifflin: Math Graphs: Area of a Region [Pdf]
Students calculate the area of a region using the Midpoint Rule. The resource consists of an enlarged printable version of a graph available in PDF format.