Area

Area is a two-dimensional measurement for a two-dimensional figure. The introduction of area expands on the idea of the one-dimensional measurement of length, but instead of staying one-dimensional, it goes in two directions. The video introduces the area formula for rectangles and explains the formula for triangles.

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CCSS: Adaptable
Instructional Ideas

  • Lead a discussion on why the formula for area of a triangle works even if it is not half of a rectangle
  • For higher level grades, supply problems where the area is known but the class must figure out a missing measurement
Classroom Considerations

  • The class should be comfortable with multiplication
Pros

  • Provides a graphical explanation of the area of a triangle
  • The last part of the resource is a review of what the narrator presented
Cons

  • None