Reflection: Connection to Prior Knowledge Introductory Investigation of Quadrilaterals - Section 1: Ensuring Familiarity with the Concepts


In order for this lesson to work properly, it is imperative that the students deeply understand the terms bisect, congruent, perpendicular, and parallel. I have attempted this activity without setting it up first and it was an unqualified disaster. Even though it seemed common sense to me, when I handed the students the diagram of a quadrilateral and asked if, for example, the diagonals were bisected, I was met with nothing but a bunch of blank stares.  I found the students could automatically mark congruent segments or angles on a given diagram, but when asked to actually determine by measuring a diagram if two segments or angles were congruent, it was an entirely different story and a lot of students struggled. 

Taking 10 minutes for a Warm Up task to ensure understanding can make the difference between success and complete failure!

  Deep Prior Knowledge Required!
  Connection to Prior Knowledge: Deep Prior Knowledge Required!
Loading resource...

Introductory Investigation of Quadrilaterals

Unit 8: Quadrilaterals
Lesson 1 of 5

Objective: Students will be able to investigate the specific features of the different quadrilaterals.

Big Idea: Students familiarize themselves with quadrilaterals by using a ruler and protractor to investigate the characteristics that define each polygon.

  Print Lesson
8 teachers like this lesson
Math, Geometry, quadrilaterals, parallelogram, rectangle, rhombus, square, trapezoid, kite, Isosceles Trapezoid, 10th grade
  45 minutes
quadrilateralsimage resized
Similar Lessons
Shifty Shears
Geometry » Area Relationships
Big Idea: We use Cavalieri's Principle to analyze racing yacht sails, the face of a deck of cards, and shears...which are used in yet another transformation proof.
Ault, CO
Environment: Rural
Tom Chandler
Presenting Polygons
Geometry » Pretty Polygons
Big Idea: Tri, Quad, Pent, Hex ... learn the key vocabulary for polygon shapes and find interior angle measure for these pretty polygons!
Saratoga Springs, NY
Environment: Suburban
Stephanie Conklin
Origami Cranes and Geometric Definitions
Geometry » Proofs about Parallelograms
Big Idea: Students explore theorems about parallelograms through a hands-on activity. By the end of the activity, students will have made an Origami Crane!
New York, NY
Environment: Urban
Marisa Laks
Something went wrong. See details for more info
Nothing to upload