Math Mammoth
Finding the Area of Rectangles, Parallelograms, and Triangles
For this area of polygons activity, 9th graders solve two area of rectangles, one area of parallelogram, and ten area of triangles problems. The formulas for finding the area of these figures are provided.
Curated OER
Complex Area Problems
Learners calculate the area of different polygons. For this geometry lesson, students find the area of complex polygons. They solve word problems using rates and distances.
Curated OER
Pick's Theorem
Students investigate polygons and their lattice. In this calculus instructional activity, students record data using different methods. They analyze their data and draw conclusions based on the relationship between the area and the...
CK-12 Foundation
CK-12 Middle School Math Concepts - Grade 6
Twelve chapters cover a multitude of math concepts found in the Common Core standards for sixth grade. Each title provides a brief explanation of what you will find inside the chapter—concepts from which you can click on and learn more...
Open Text Book Store
Arithmetic for College Students: Worksheets
Loaded with concepts ranging from multiplying decimals to converting units to solving problems using the order of operations, a thorough practice packet is perfect for a fifth or sixth grade math classroom.