LBST Math - 12.4 Areas of Parallelograms and Other Polygons

12.4 Areas of Parallelograms and Other Polygons

Proofs: Parallelogram

Proofs: Trapezoid

Information in this section corresponds to: 12.4 Areas of Parallelograms and Other Polygons: Beckmann, Sybilla. Mathematics for Elementary Teachers with Activities (p. 544-546). Pearson Education.

Visualizing the Area of a Parallelogram Formula Number Talk PromptsVisualizing the Area of a Parallelogram Formula by decomposing the parallelogram and recomposing to build a rectangle with the same area.

Visualizing the Area of a Trapezoid Formula | DerivationVideo that shows where the area of a trapezoid formula comes from by showing multiple ways to divide the shape to develop a deeper understanding.

Proofs: Parallelogram

Proofs: Trapezoid

Practice:

Information in this section corresponds to: 12.4 Areas of Parallelograms and Other Polygons: Beckmann, Sybilla. Mathematics for Elementary Teachers with Activities (p. 544-546). Pearson Education.

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