2.3.A
The Standard
partition objects into equal parts and name the parts, including halves, fourths, and eighths, using words
Texas Essential Knowledge and Skills for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students divide one whole shape or object into equal shares. They identify and name each share using the words half, fourth, and eighth.
What Mastery Looks Like
- A student can divide a shape or object into 2, 4, or 8 equal shares. The student names one share as one half, one fourth, or one eighth.
Common Misconceptions
- Students may count pieces without checking that the pieces are equal in size. They may also think eighths are larger than halves because eight is greater than two.
How to Assess It
- On an exit ticket, give three identical rectangles. Students split them into 2, 4, and 8 equal shares, then label one share in words.
Lesson moves
Ways to Teach It
Give pairs paper circles to fold into halves, fourths, and eighths, then have them label each share with words.
Show two differently divided rectangles and ask, “Which one shows fourths, and how do you know?”
Play a matching game with shape cards and word cards labeled one half, one fourth, and one eighth.
Plan how to share one sandwich equally among 2, 4, or 8 children, using paper sandwich cutouts.
Keep exploring
Related Standards
- 1.6.G
partition two-dimensional figures into two and four fair shares or equal parts and describe the parts using words
- 3.7.A
represent fractions of halves, fourths, and eighths as distances from zero on a number line
- 1.6.H
identify examples and non-examples of halves and fourths
- 2.3.D
identify examples and non-examples of halves, fourths, and eighths
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