Khan Academy

Two-step equations review (K-A)

Worked example: two-step equations (K-A)

Finding mistakes in one-step equations -link (K-A)

Finding mistakes in one-step equations -video (K-A)

Graphing inequalities review (K-A)

Inequalities word problems (K-A)

Plotting an inequality example (K-A)

Plotting inequalities (K-A)

Testing solutions to inequalities (K-A)

Area of a triangle (K-A)

Area of triangles (K-A)

Finding area of triangles (K-A)

Triangle missing side example (K-A)

Area of a parallelogram (K-A)

Area of parallelograms (K-A)

Finding height of a parallelogram (K-A)

Area of composite shapes (K-A)

Finding area by rearranging parts (K-A)

Intro to nets of polyhedra (K-A)

Surface area of a box (cuboid) (K-A)

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

Surface area review (K-A)

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

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

Surface area word problem example (K-A)