Public learning track
Composing, Decomposing, and Partitioning Shapes
2nd Grade · Math · Open Global Math
6 lessons
Goal
Compose and decompose geometric shapes and partition rectangles into rows and columns of equal-sized unit squares.
Featured Diagrams
Making Squares and Rectangles from Triangles
6 lessons
0 of 6 done
- 1Making Squares and Rectangles from TrianglesUp nextStart
- 2Breaking Polygons into Triangles and RectanglesPremiumNot started yet
- 3Partitioning Rectangles Into Rows and ColumnsNot started yet
- 4Counting Unit Squares in Partitioned RectanglesNot started yet
- 5Partitioning Shapes into Equal-Area Fractional PartsNot started yet
- 6Tangram Puzzles: Building ShapesNot started yet
Curriculum Framework
2nd Grade · Math · Open Global Math
1
8 lessons
Two-Dimensional Shapes and Polygons
Identify, describe, compare, and draw polygons from triangles up to 12-sided shapes using sides, vertices, and angles.
2
6 lessons
Classifying Quadrilaterals and Angle Properties
Classify, compare, and sort quadrilaterals based on right angles, parallel sides, and equal side lengths.
3
6 lessons
Composing, Decomposing, and Partitioning Shapes
Compose and decompose geometric shapes and partition rectangles into rows and columns of equal-sized unit squares.
4
8 lessons
Three-Dimensional Solids, Faces, and Nets
Identify, describe, and build 3D solids by analyzing faces, edges, vertices, 2D face prints, and unfolded nets.
5
7 lessons
Symmetry and Geometric Transformations
Identify and draw lines of symmetry in shapes and artwork, and perform reflections and translations.
6
7 lessons
Position, Direction, Grid Maps, and Turns
Describe movement, coordinates, and pathways using cardinal directions, relative position, and angle turns.