Curriculum placement
Grade 2. This describes the skill, not a learner estimate.
Halves, thirds, and quarters
Recognize equal halves thirds and quarters in varied wholes
Problem types
- Eighths and counting parts beyond one whole
- Find halves, thirds or quarters
- Name halves, thirds and quarters
- Equal shares, different shapes
Builds on
Leads to
- Unit fractions of a whole
- Probability of one event · See it applied
Equal parts of a spinner give equal chances, so each third has chance 1/3.
- Arc length and sector area · Extend the idea
Equal parts of a circle are sectors, and a sector is a fraction of the whole circle.
Related skills
- Division as sharing and grouping · Related idea
Sharing a whole into equal parts is partitioning, and division finds the size of each equal share.
- Defining attributes of shapes · Related idea
Equal parts of a shape are partitions that depend on its attributes, such as sides of equal length.
Open the interactive map to explore lessons and skill connections.