Public learning track
Odd and Even Numbers: Pairing, Doubles, and Halves
2nd Grade · Math · Open Global Math
5 lessons
Goal
Identify, analyze, and justify odd and even numbers up to 100 using pairings, equal sharing, and doubles.
Featured Diagrams
Identifying Even and Odd Numbers by Pairing
5 lessons
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- 1Identifying Even and Odd Numbers by PairingUp nextStart
- 2Sharing into Two Equal GroupsPremiumNot started yet
- 3Even Numbers as Two Equal PartsNot started yet
- 4Patterns of Ones Digits in Even and Odd NumbersNot started yet
- 5Adding and Subtracting Odd and Even NumbersNot started yet
Standards Covered
- OGM.3.OA.3Open Global Math Standards 2026™ · Math · Level 3 / Grade 2 (Age 7) · Grade 2Determine whether a whole number or group of objects (up to 40 and beyond) is even or odd by pairing objects, grouping by 2s, or sharing into two equal sets; express an even number as a sum of two equal addends (doubles) and connect to halving.
- OGM.3.OA.8Open Global Math Standards 2026™ · Math · Level 3 / Grade 2 (Age 7) · Grade 2Recognize, describe, extend, create, and find missing elements in increasing, decreasing, and repeating patterns (numerical, geometric, and functional sequences).
Curriculum Framework
2nd Grade · Math · Open Global Math
1
7 lessons
Mental Addition and Subtraction Fluency Within 20
Master mental math strategies and achieve automatic recall for all addition and subtraction facts within 20.
2
5 lessons
Odd and Even Numbers: Pairing, Doubles, and Halves
Identify, analyze, and justify odd and even numbers up to 100 using pairings, equal sharing, and doubles.
3
6 lessons
One-Step and Two-Step Addition and Subtraction Word Problems
Model and solve complex one- and two-step word problems within 100 and 1,000 using bar models and algebraic equations.
4
6 lessons
Foundations of Multiplication: Equal Groups and Arrays
Build conceptual understanding of multiplication as equal groups, repeated addition, and rectangular arrays.
5
6 lessons
Foundations of Division: Equal Sharing and Grouping
Understand division as fair sharing (partitive) and repeated grouping (quotative), writing formal division equations.
6
5 lessons
Multiplication and Division Facts for 2, 5, and 10
Build fluency and rapid recall for multiplication and division facts involving 2, 5, and 10.
7
5 lessons
Multiplication and Division Facts for 3, 4, and 8
Derive and recall multiplication and division facts for 3, 4, and 8 using doubling and distributive strategies.
8
5 lessons
Properties of Operations and Mental Multiplication
Apply the associative, commutative, and distributive properties to calculate products mentally and verify equations.
9
4 lessons
Multiplying by Tens and Hundreds
Multiply single-digit whole numbers by multiples of 10 and 100 using base-ten place value strategies.
10
6 lessons
Multi-Step Mixed Operation Word Problems
Deconstruct, represent, and solve two- and three-step word problems involving all four operations.
11
5 lessons
Rates, Multiplicative Comparisons, and Cartesian Products
Model and solve problems involving constant unit rates, multiplicative comparisons (times as many), and combinations.
12
6 lessons
Patterns, Sequences, and Function Tables
Identify, extend, describe, and find missing elements in numerical, geometric, and input-output table patterns.