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Partition bars, squares, and circles into equal groups of halves, thirds, and fourths. Demonstrate understanding of unit fractions by coloring any 1 of the parts to show 1 half, 1 third, or 1 fourth. Understand that when the whole is the same, 1 half is greater than 1 third, and greater than 1 fourth.
Draw fractions by dividing a bar into equal parts. To draw 2 halves, draw a dot in the middle of the bar and a vertical line thru the dot. To make 4 fourths, draw dots in the middle of each half and 2 more vertical lines thru the dots. To draw 3 thirds, practice drawing 2 vertical lines that make 3 equal parts. Generalize to area.
Prerequisites: K-132
Start with 1-dimensional, linear models. Divide the length of a bar into 2, 3, or 4 equal parts. To draw 2 halves or 3 thirds, estimate visually. To draw 4 fourths, first draw 2 halves. Divide each half in half to make 4 equal parts.
Prerequisites: 1-78 ○ K-133
Generalize from dividing the length of a bar to dividing the area or space "inside" a square into equal parts. Explore different ways of drawing 2 halves, 3 thirds, and 4 fourths – using horizontal, vertical, and diagonal lines. Fold paper to model and reinforce equal parts concretely.
Prerequisites: 1-79 ○ K-134
