Khan Academy

Area of a parallelogram (K-A)

Finding height of a parallelogram (K-A)

Area of a triangle (K-A)

Finding area of triangles (K-A)

Triangle missing side example (K-A)

Counting faces and edges of 3D shapes (K-A)

Recognizing common 3D shapes (K-A)

Area of a parallelogram on the coordinate plane (K-A)

Coordinates of a missing vertex (K-A)

Coordinates of rectangle example (K-A)

Dimensions of a rectangle from coordinates (K-A)

Drawing a quadrilateral on the coordinate plane example (K-A)

Example of shapes on a coordinate plane (K-A)

Intro to nets of polyhedra (K-A)

Parallelogram on the coordinate plane (K-A)

Surface area of a box using nets (K-A)

Surface area of a box (cuboid) (K-A)

Surface area using a net: rectangular prism (K-A)

Surface area using a net: triangular prism (K-A)

Surface area word problem example (K-A)

How volume changes from changing dimensions (K-A)

Volume of a rectangular prism: fractional dimensions (K-A)

Volume of a rectangular prism: word problem (K-A)

Volume with fractional cubes (K-A)

Area of a shaded region (K-A)