Virginia SOL 1.NS.3.a
The Standard
Represent equal shares of a whole with two or four sharers, when given a contextual problem.
Virginia Standards of Learning for Mathematics · The student will use mathematical reasoning and justification to solve contextual problems that involve partitioning models into two and four equal-sized parts.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students use objects, drawings, or paper models to split one whole fairly between two or four people. They show that every person receives the same-sized share.
What Mastery Looks Like
- Given a sharing problem, the student partitions a model into two or four equal parts and assigns one part to each person. The student spots an unfair partition and fixes it.
Common Misconceptions
- Students may call any two or four pieces equal shares even when the pieces differ in size. They may confuse the number of cuts with the number of parts.
How to Assess It
- Exit ticket: “Four children share one rectangular brownie equally. Draw the shares, label each child’s part, and explain why the sharing is fair.”
Lesson moves
Ways to Teach It
Give pairs a paper sandwich, then have them fold and cut it so two toy figures receive equal shares.
Show equal and unequal pizza models, then ask, “Which sharing is fair, and how do you know?”
Play Fair Share Sort by grouping picture cards as fair for two, fair for four, or not fair.
Have students draw how one granola bar could be shared equally by two friends and then by four friends.
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Printable 1.NS.3.a Worksheet
A ready-to-print activity worksheet aligned to 1.NS.3.a, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- 1.NS.3.c
Describe and justify how shares are equal pieces or equal parts of the whole (limited to halves, fourths) when given a contextual problem.
- 1.NS.3
The student will use mathematical reasoning and justification to solve contextual problems that involve partitioning models into two and four equal-sized parts.
- 4.NS.3.g
Represent the division of two whole numbers as a fraction given a contextual situation and a model (e.g., 3 5 means the same as 3 divided by 5 or 3 5 represents...
- 2.NS.1.h
Represent even numbers (up to 50) with concrete objects, using two equal groups or two equal addends.
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