TOPIC 2 · GRADE 3 FOUNDATION
One Fraction, Many Models
Connect fraction circles, bars, sets, words, and symbols.
MA.3.FR.1.1–1.3BIG IDEA
The same fraction can describe part of an area, a point on a number line, or part of a group, as long as the whole is clearly defined.
LEARN IT WITH A STORY
The same 3/4 lunch in three pictures
A pizza area, a granola bar length, and a set of twelve berries can all show 3/4. The whole changes shape, but the fraction's value does not.
- 1In an area model, shade 3 of 4 equal regions.
- 2On a strip, mark 3 of 4 equal lengths.
- 3In a set of 12 berries, split into 4 equal groups and select 3 groups: 9 berries.
Draw and explain
Show 2/3 with a circle, a bar, and a set of 12 counters.
FRACTION WORD BANK
Tap a word, then turn the card
Say the word aloud before revealing its meaning. Tap again to return to the word.
WATCH AND NOTICE
Fraction Models — Area, Linear, and Set
Pause when a model appears. Name the whole, denominator, numerator, and fraction before the teacher explains it.
Open on YouTube ↗WHAT TO KNOW
- Area models divide one shape into equal regions.
- Set models count equal-status objects in one collection.
- Fraction strips make it easy to compare parts of equal-sized wholes.
WATCH OUT
The numerator and denominator do not count two unrelated things; together they name one number.
TRY IT
Switch among pie, bar, and set models without changing the fraction.