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This is a lesson for 3rd grade math about the concept of a fraction. Students color parts to illustrate fractions, write fractions from visual models and from number lines, and learn to draw pie models for some common fractions. Lastly they divide shapes into equal parts themselves and show the given fraction.
Fractions are formed when we have a WHOLE that is divided into so many EQUAL parts. | |||||
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“three eighths” | The number ABOVE the line tells HOW MANY PARTS The number BELOW the line tells how many EQUAL parts After halves, we use ordinal numbers to name the fractional parts |
1. Color the parts to illustratethe fraction.
a. | b. | c. | d. | e. | f. |
7 8 | 6 10 | 4 6 | 4 5 | 2 4 | 4 7 |
g. | h. | i. | j. | k. | l. |
2 6 | 11 12 | 5 9 | 1 5 | 9 10 | 2 7 |
2. Write the fractions, and read them aloud.
a. | b. | c. | d. |
e. | f. | g. | h. |
i. | j. | k. | l. |
How many parts is this “whole” divided into? Don't count the little lines. Count the “units” or the parts. One of them is like this: How many of them are colored?
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3.Write the fractions, and read them aloud.
a. | b. |
c. | d. |
e. | f. |
How to draw pie models | ||||
Halves: split the circle | Thirds: draw lines at 12 o'clock, | Fourths: First draw halves, then | ||
Fifths: Drawlike a man |
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4. Draw the pie models and color the parts to illustratethe fractions.
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5. Color in the whole shape = 1 whole. Then write 1 whole as a fraction.
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6. Divide the shapes into equal parts, and color some of the parts, to show the fractions.
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7. Divide the shapes into equal parts. Shade ONE part. Write the area of that part as a fraction
of the whole area.