Public learning track
Identifying 2D Shapes and Their Attributes
Early Years · Math · Open Global Math
10 lessons
Goal
Identify, name, and describe attributes of basic two-dimensional shapes (circles, squares, triangles, rectangles).
Featured Diagrams
Identifying and Naming Circles
10 lessons
0 of 10 done
- 1Identifying and Naming CirclesUp nextStart
- 2Identifying and Naming SquaresPremiumNot started yet
- 3Identifying and Naming Triangles in Any OrientationNot started yet
- 4Identifying and Naming RectanglesNot started yet
- 5Finding 2D Shapes in Everyday Classroom ObjectsNot started yet
- 6Counting Straight Sides on 2D ShapesNot started yet
- 7Counting Corners and Vertices on 2D ShapesNot started yet
- 8Comparing Straight Sides and Curved LinesNot started yet
- 9Comparing Squares and Rectangles by Their SidesNot started yet
- 10Sorting Shapes by Number of Sides and CornersNot started yet
Standards Covered
- OGM.0.G.1Open Global Math Standards 2026™ · Math · Early Years / Pre-K (Age 4) · Pre-KIdentify, name, and describe basic two-dimensional shapes (circle, square, triangle, rectangle) regardless of their orientation, size, or color.
- OGM.0.G.2Open Global Math Standards 2026™ · Math · Early Years / Pre-K (Age 4) · Pre-KDescribe informal and basic formal attributes of two-dimensional shapes, including straight lines/sides and corners/vertices (e.g., 'a triangle has 3 sides and 3 corners').
Curriculum Framework
Early Years · Math · Open Global Math
1
9 lessons
Oral Counting and Number Words to 20
Verbally recite the forward number sequence from 1 to 20 with rhythmic fluency and auditory confidence.
2
8 lessons
One-to-One Counting Objects to 5
Accurately touch and count sets of up to 5 concrete objects using one-to-one correspondence.
3
9 lessons
One-to-One Counting Objects to 10
Count structured and scattered collections of up to 10 objects with consistent one-to-one correspondence.
4
9 lessons
Cardinality and Conservation of Quantity
Understand that the last number counted tells the total quantity and that spatial rearrangement does not change count.
5
8 lessons
Perceptual Subitizing to 5
Instantly recognize and name small quantities up to 5 without counting one by one.
6
9 lessons
Recognizing and Matching Numerals 0 to 5
Identify, read, trace, and match written numeral symbols 0 to 5 with corresponding quantities.
7
9 lessons
Recognizing and Matching Numerals 6 to 10
Read, identify, and pair written numerals 6 to 10 with matching collections and structures.
8
10 lessons
Comparing Quantities and Groups to 10
Compare two groups of up to 10 items using matching and counting to determine more, fewer, or equal.
9
8 lessons
Ordinal Numbers and Sequencing to Fifth
Use ordinal position words (first, second, third, fourth, fifth, and last) to identify relative placement.
10
9 lessons
Putting Together: Early Addition to 5
Model, describe, and solve joining situations (adding to and putting together) with totals up to 5.
11
9 lessons
Taking Away: Early Subtraction to 5
Model, describe, and solve separating and taking away situations within 5.
12
9 lessons
Composing and Decomposing Numbers to 5
Decompose numbers up to 5 into pairs of parts in multiple ways using manipulatives and drawings.
13
9 lessons
Repeating Patterns and Sequences
Identify, duplicate, extend, and create repeating patterns using manipulatives, sounds, and visual elements.
14
8 lessons
Fair Sharing and Equal Halves
Divide small even collections of objects equally between two recipients using fair sharing strategies.
15
10 lessons
Comparing Length and Height
Directly compare the length and height of two objects using comparative measurement vocabulary.
16
9 lessons
Comparing Weight and Capacity
Directly compare weight and capacity of everyday objects using comparative vocabulary.
17
8 lessons
Ordering Objects by Size and Length
Seriate and order three concrete objects by size, length, or height through direct side-by-side comparison.
18
10 lessons
Sorting, Classifying, and Data Counting
Sort objects into categories by a single attribute and count the number of items in each group up to 5.
19
10 lessons
Everyday Time, Daily Routines, and Sequencing
Use temporal vocabulary and sequence daily events, routines, and relative days of the week.
20
10 lessons
Identifying 2D Shapes and Their Attributes
Identify, name, and describe attributes of basic two-dimensional shapes (circles, squares, triangles, rectangles).
21
10 lessons
Solids, Spatial Positions, and Shape Building
Identify 3D solid shapes, describe positions in space, and compose/build figures with shapes.