Public learning track
Plane Measurement: Perimeter, Arc Length, Composite Area, and Sectors
8th Grade · Math · Open Global Math
10 lessons
Goal
Calculate perimeters, arc lengths, and areas of regular, composite, circular, and irregular plane figures using appropriate metric units and levels of precision.
Featured Diagrams
Metric Units of Length and Precision in Measurement
10 lessons
0 of 10 done
- 1Metric Units of Length and Precision in MeasurementUp nextStart
- 2Perimeter of Irregular and Composite PolygonsPremiumNot started yet
- 3Circumference and Arc Length of CirclesNot started yet
- 4Arc Length Word Problems and Practical ApplicationsNot started yet
- 5Converting Metric Units of Area and Choosing PrecisionNot started yet
- 6Area of Regular Polygons Using ApothemNot started yet
- 7Area of Sectors and Circular SegmentsNot started yet
- 8Area of Composite Figures Combining Polygons and CirclesNot started yet
- 9Real-World Area Problems with Waste and BoundariesNot started yet
- 10Estimating Areas of Irregular Shapes Using Grids and TrapezoidsNot started yet
Curriculum Framework
8th Grade · Math · Open Global Math
1
10 lessons
Plane Measurement: Perimeter, Arc Length, Composite Area, and Sectors
Calculate perimeters, arc lengths, and areas of regular, composite, circular, and irregular plane figures using appropriate metric units and levels of precision.
2
12 lessons
Surface Area, Volume, and Capacity of Three-Dimensional Solids
Calculate lateral surface area, total surface area, volume, and fluid capacity for prisms, cylinders, cones, and spheres, and explore geometric relationships between 3D solids.
3
10 lessons
Rates, Compound Measures, Duration, and Global Time Zones
Solve real-world rate problems involving speed, density, pressure, unit pricing, time conversions across 12/24-hour clocks, and international time zone schedules.
4
10 lessons
Consumer Mathematics: Interest, Credit, and Financial Modeling
Model financial decisions including simple and compound interest, loan repayments, total cost of credit, payment options, and long-term savings strategies.