A. Geometric Properties

1. Identify and describe spatial relationships of two or more objects in space.
   • Direction, orientation, and perspectives (e.g., which object is on your left when you are standing here?)
   • Relative shapes and sizes
2. Use properties of standard three-dimensional and two-dimensional shapes to identify, classify, and describe them.
   • Vertex, edge, face, side, angle
   • 3D figures - cube, rectangular prism, sphere, cone, cylinder, and pyramid
   • 2D figures - square, rectangle, circle, triangle, pentagon, hexagon, octagon
3. Identify and describe relationships among two-dimensional shapes.
   • Same size, same shape
   • Lines of symmetry
4. Understand and apply concepts involving lines, angles, and circles.
   • Line, line segment, endpoint
5. Recognize, describe, extend, and create space-filling patterns.

B. Transforming Shapes

1. Describe and use geometric transformations (slide, flip, turn).
2. Investigate the occurrence of geometry in nature and art.

C. Coordinate Geometry

1. Locate and name points in the first quadrant on a coordinate grid.

D. Units of Measurement

1. Understand that everyday objects have a variety of attributes, each of which can be measured in many ways.
2. Select and use appropriate standard units of measure and measurement tools to solve real-life problems.
   • Length - fractions of an inch (1/4, 1/2), mile, decimeter, kilometer
   • Area - square inch, square centimeter
   • Weight - ounce
   • Capacity - fluid ounce, cup, gallon, milliliter
3. Incorporate estimation in measurement activities (e.g., estimate before measuring).

E. Measuring Geometric Objects

1. Determine the area of simple two-dimensional shapes on a square grid.
2. Determine the perimeter of simple shapes by measuring all of the sides.
3. Measure and compare the volume of three-dimensional objects using materials such as rice or cubes.