Area of Parallelograms

6.GR.1 · Unit 5 · Lesson 1

Name   Period

Objectives / Objetivos

Content Objective: I can find the area of a parallelogram using base × height.

Language Objective: I can explain how I found the area using the words base, height, area, and formula.

Key Idea / Idea clave

Area of a parallelogram = base × height, where the height is the straight-up (perpendicular) distance, NOT the slanted side.

I Notice / Observo

  • What shape is the patio?
  • What measurements are given?

I Wonder / Me pregunto

  • Why do we use the height instead of the slanted side to find the area?

Vocabulary / Vocabulario

Term / TérminoDefinition / Definición
Parallelogram
Paralelogramo		A four-sided shape with two pairs of parallel sides.
Una figura de cuatro lados con dos pares de lados paralelos.
Base
Base		A side of the shape you use to find the area.
Un lado de la figura que usas para hallar el área.
Height
Altura		The straight-up distance from the base to the top.
La distancia recta hacia arriba desde la base hasta la parte de arriba.
Area
Área		How much space is inside a flat shape.
Cuánto espacio hay dentro de una figura plana.
Composite figure
Figura compuesta		A shape made by putting two or more simple shapes together.
Una figura formada al juntar dos o más figuras simples.
Formula
Fórmula		A math rule written with symbols.
Una regla matemática escrita con símbolos.

Practice Preview / Vista previa de práctica

  1. What is the area of a parallelogram with base 10 cm and height 7 cm?
    1. 70 sq cm
    2. 34 sq cm
    3. 17 sq cm
    4. 70 cm
  2. Problem 2
  3. Match each shape to its area.
  4. Find the Area Error
    1. Step 1: Identify base and height — b = 11 m, slant side = 8 m, h = 6 m
    2. Step 2: Write the formula — A = b × h
    3. Step 3: Substitute values — A = 11 × 8
    4. Step 4: Calculate — A = 88 sq m

    Which step has the mistake? Explain it and write the correct work.

Reflection / Reflexión

One thing I learned today / Una cosa que aprendí hoy: