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4.G.2
2011
Domain: Geometry
Cluster: Draw and identify lines and angles, and classify shapes by properties of their lines and angles.
Standards: 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.
Essential Questions
-How do you classify a
two-dimensional figure?
Content Statements
- Students will learn to
identify polygons.
- Students will learn to
identify and classify
triangles
- Students will learn to
identify quadrilaterals
- Students will solve
problems by making and
testing generalizations.
Assessments
Enduring Understandings
- Two- dimensional or plane
shapes have many properties that
make them different from one
another. Polygons can be
described and classified by their
sides and angles.
- Two-dimensional or plane
shapes have many properties that
make them different from one
another. Polygons can be
described and classified by their
sides and angles.
- Two-dimensional or plane
shapes have many properties that
make them different from one
another. Polygons can be
described and classified by their
sides.
- Commonalities in attributes of
objects or situations can be found
and used to make generalizations
about relationships
Activities, Investigation, and Student Experiences
Students will sort two-dimensional figures based on parallelism,
perpendicularity, and angle types using a Venn Diagram.
Students will draw quadrilaterals with diagonals. Students will
investigate parallel or perpendicular lines and right triangles.
Given specified criteria students will draw the figure. (example:
a parallelogram with one right angle; a quadrilateral with one
pair of parallel sides.)
4.G.2
-Series Assessments
2011
–Teacher Observation
-Teacher made Assessments
-Open-ended word problems
Equipment Needed: Math manipulatives, available
technology, pencil, paper.
Teacher Resources:
Series Textbook
Supplemental Worksheets
http://www.k-5mathteachingresources.com/4th-grade-numberactivities.html
http://www.ixl.com/math/grade-4 interactive practice for
individual skills across the math curriculum
http://www.homeschoolmath.net/teaching/g/parallel_and_perpe
ndicular.php a lesson plan on parallel and perpendicular lines
http://www.mathsisfun.com/triangle.html classifying triangles
http://www.internet4classrooms.com/skill_builders/geometry_m
ath_fourth_4th_grade.htm Interactive activities for many
geometry skills
http://studyjams.scholastic.com/studyjams/jams/math/index.htm
Math Movies
http://www.k-5mathteachingresources.com/
illuminations.nctm.org - look for websites and lesson plans
http://nlvm.usu.edu/en/nav/vlibrary.html
4.G.2
2011
www.softschools.com
http://math.pppst.com/ - Many free Pre-made Power Point
Presentations for Math and across the curriculum