Common Core State Standards:
4.G.2 Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of a specified size. Recognize right triangles as a category, and identify right angles.
In this unit, students will build upon their understanding of identifying various shapes through attributes. In this unit students will focus on identifying parallel lines and perpendicular lines while identifying the angles used from the previous units: acute, obtuse, and right. Students will investigate the concept of “same size and same shape”; however, the concept of congruence and similarity do not appear until middle school.
Students will build on their understanding of geometric shapes and go further with identifying and measuring angles. Students will model mastery of this concept through the following ways:
o Classify two-dimensional figures by examining their properties
o Classify triangles by examining their properties
o Classify right triangles
o Classify various quadrilaterals by describing their properties
o Classify quadrilaterals by examining their sides
o Classify parallelograms by examining their angles and sides
Mrs. Ana Rhyne
I teach 4th grade math and science at Weatherstone Elementary School. I graduated from Meredith College with a BA in Spanish and K-6 licensure.