• ### A.1. 2-D Shape I

3. #### A.1.1. Recognizing Rectangles, Squares, Circles, and Rectangles

1. A.1.1.O. Overview
2. A.1.1.1. Classifying real-life objects as Rectangles, Squares, Circles, or Triangles
3. A.1.1.2. Identifying Rectangles, Squares, Circles, and Triangles
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• ### A.2. 2D Shapes II

3. #### A.2.1. Recognizing semicircles and quarter circles

1. A.2.1.O. Overview
2. A.2.1.1. Identifying semi-circles and quarter-circles
4. #### A.2.2. Recognizing Ellipses, Trapezoids, Rhombi, and Polygons

1. A.2.2.O. Overview
2. A.2.2.1. Identifying and distinguishing between Ellipses, Trapezoids, Rhombi, and Polygons
3. A.2.2.2. Matching equivalent shapes with a given shape
5. #### A.2.3. Forming Figures with Cut-outs

1. A.2.3.O. Overview
2. A.2.3.1. Counting different shapes within simple composite figures
3. A.2.3.2. Counting different shapes within complex composite figures
6. #### A.2.4. Simple Figure Patterns

1. A.2.4.O. Overview
2. A.2.4.1. Predicting the next shape in a sequence of 2-D and 3-D shapes
3. A.2.4.2. Describing patterns using letters
7. #### A.2.5. Complex Figure Patterns

1. A.2.5.O. Overview
2. A.2.5.1. Predicting the next shape in a sequence of complex shapes
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• ### A.3. Lines, Curves, Vertices, and Surfaces

3. #### A.3.1. Identifying Lines, Curves, Vertices, and Sides of 2-D Shapes

1. A.3.1.O. Overview
2. A.3.1.1. Determining whether there are straight lines in various shapes
3. A.3.1.2. Identifying and counting the number of straight lines and curves in various shapes
4. A.3.1.3. Identifying and counting the number of Vertices & Sides in various shapes
4. #### A.3.2. Identifying Flat Surfaces in 3-D Shapes

1. A.3.2.O. Overview
2. A.3.2.1. Identifying and counting the number of flat surfaces in various 3-D shapes
5. #### A.3.3. Basic 3-D Figures

1. A.3.3.O. Overview
2. A.3.3.1. Identifying and naming 3-D figures
3. A.3.3.2. Identifying the number of vertices, edges & faces in 3-D Shapes
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• ### A.5. Squares and Rectangles

3. #### A.5.1. Properties of Squares & Rectangles

1. A.5.1.O. Overview
2. A.5.1.1. Identifying the properties of squares
3. A.5.1.2. Identifying the properties of rectangles
4. A.5.1.3. Determining lengths of unknown sides of rectangles
5. A.5.1.4. Determining unknown angles within rectangles and squares
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• ### A.4. Symmetry & Tessellations

3. #### A.4.1. Reflective Symmetry

1. A.4.1.O. Overview
2. A.4.1.1. Identifying lines of symmetry in various shapes
3. A.4.1.2. Determining whether various shapes have lines of symmetry
4. A.4.1.3. Identifying and counting the lines of symmetry in various shapes
4. #### A.4.2. Rotational Symmetry

1. A.4.2.O. Overview
2. A.4.2.1. Determining whether various shapes have rotational symmetry
5. #### A.4.3. Tessellations

1. A.4.3.O. Overview
2. A.4.3.1. Determining whether a shape can be tessellated
3. A.4.3.2. Determining the unit shape from a tessellation
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• ### A.6. Triangles

3. #### A.6.1. Recognizing that the Sum of the Angles in a Triangle add up to 180Â°

1. A.6.1.O. Overview
2. A.6.1.1. Determine the unknown angle in a triangle
4. #### A.6.2. Classifying triangles as Right, Acute, or Obtuse based on angle measurements

1. A.6.2.O. Overview
2. A.6.2.1. Classifying triangles as Right, Obtuse, or Acute by identifying angle measurements
5. #### A.6.3. Classifying triangles as Isosceles, Equilateral, or Scalene based on the number of equal sides

1. A.6.3.O. Overview
2. A.6.3.1. Classifying triangles by identifying the number of equal sides
3. A.6.3.2. Classifying all types of triangles Based on the Length of its Sides
4. A.6.3.4. Determining the length of an unknown side of a triangle
6. #### A.6.4. Calculating Missing Angles from Special Triangles

1. A.6.4.O. Overview
2. A.6.4.1. Determining the unknown angle in a right triangle
3. A.6.4.2. Determining the unknown angle in an isosceles triangle
4. A.6.4.3. Determining unknown angles in isosceles, scalene, and right triangles
5. A.6.4.4. Determining unknown angles in composite figures
6. A.6.4.5. Determining unknown angles in complex composite figures
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• ### A.7. Quadrilaterals

3. #### A.7.1. Properties of Parallelograms, Rhombi, and Trapezoids

1. A.7.1.O. Overview
2. A.7.1.3. Determining unknown angles in parallelograms
3. A.7.1.4. Determining unknown angles in trapezoids
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• ### A.8. 3-D Figures

3. #### A.8.1. Nets

1. A.8.1.O. Overview
2. A.8.1.1. Determining whether a net will form a cube or cuboid when folded
4. #### A.8.2. Spatial Reasoning

1. A.8.2.O. Overview
2. A.8.2.1. Determining whether two 3-D shapes are identical
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