MA 6.01Fraction Insets (Metal Fraction Circles): Naming Parts
The child removes and replaces the pieces of the metal fraction circles and learns the names whole, half, third, and fourth, then fifths to tenths.
Age 4½Work 1 of 3 in Fractions
Presentation
- 1
Bring the whole, the halves, and the fourths to the table.
- 2
Remove the whole: 'This is one whole.' Replace it.
- 3
Remove the two halves one at a time: 'This is one half. This is one half. Two halves make one whole.' Replace them.
- 4
Do the same with the fourths: 'Four fourths make one whole.'
- 5
Three-period lesson with one whole, one half, and one fourth.
- 6
Mix the pieces on the table; the child returns each to its frame.
- 7
In later lessons introduce thirds, then fifths to tenths.
Extensions, easiest to hardest
- Child counts the parts in each circle and names them.
- Trace pieces on paper, color them, and label them with words.
- Cut paper circles or fruit into halves and fourths at snack time.
Control of error
Each piece fits only its own frame, and the pieces of a circle fill it exactly with no gaps.
Ready to move on when the child…
- Names whole, half, third, and fourth when shown a piece
- Replaces all pieces in their frames without help
- Says how many halves, thirds, or fourths make one whole