Content Area: Math

 

Index: 4.2A Grade 5 CPI 1

 

Standard: 4.2 - Geometry and Measurement

 

Strand: A - Geometric Properties

 

Cumulative Progress Indicator: 1 -  The student will understand and apply concepts involving lines and angles.

·        Notation for line, ray, angle, line segment

·        Properties of parallel, perpendicular, and intersecting lines

·        Sum of the measures of the interior angles of a triangle is 180°

 

Grade: 5

 

Sample Activities:

 

·        Students use index cards with slits cut in them to build models of two planes that are parallel or two planes that intersect (in a line).

 

·        Students use toothpicks to explore how two lines might be related to each other (parallel, intersecting, perpendicular, the same line).

 

·        Students find examples of parallel lines and planes, perpendicular lines and planes, and intersecting lines and planes with different angles in their environment.