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- 4.G.A.1Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.
- 4.G.A.2Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.
- 4.G.A.3Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry.

Monster Plants

4th Grade Science

Â» Unit:

Plants: Structures and Processes

Big Idea:Given a set of criteria about climate and soil, students research carnivorous plants and create a model that will support their argument of how external parts help this plant survive in its environment.

Mira Mira The Amazing Mira

4th Grade Science

Â» Unit:

Energy

Big Idea:Using a mira, students draw symmetrical pictures and then explain how the mira works using what they know about reflection and the eye.

Classification of Quadrilaterals

4th Grade Math

Â» Unit:

Geometry

Big Idea:Students will investigate and classify quadrilaterals by their properties.

Regular vs. Irregular Polygons

4th Grade Math

Â» Unit:

Geometry

Big Idea:Students will complete a powerpoint presentation and will explore the difference between regular and irregular polygons.

Line of Symmetry

4th Grade Math

Â» Unit:

Geometry

Big Idea:Folding a two-dimensional shape can help a student identify the lines of symmetry.

Math Foldables - Geometry Assessment

4th Grade Math

Â» Unit:

Geometry

Big Idea:Foldables are alternative ways to assess students in math.

Little Bears Vest - A lesson on Symmetry

4th Grade Math

Â» Unit:

Geometry

Big Idea:In this partner work lesson, student work with pattern blocks and their creativity to design a shape pattern that has at least one line of symmetry. Students also find the fractional value of each shape and calculate in order to calculate the total value

Line Symmetry

5th Grade Math

Â» Unit:

Targeted Skills Interventions

Big Idea:Half and Half!

Writing About Symmetry: A sister lesson to Discovering the Meaning of Line Symmetry

4th Grade Math

Â» Unit:

Geometry

Big Idea:Students use the design they created in the last lesson to write an explanation of what they discovered about its symmetry.

Tangrams with Grandfather Tang

5th Grade Math

Â» Unit:

Geometry

Big Idea:Creating rich tasks through integrating literature, positive interactions, and kinesthetic tasks when exploring geometric two dimensional shapes.

4.G.A.1

Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.

4.G.A.2

Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.

4.G.A.3

Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry.