In grade 1, students learned that when a shape is partitioned into 2 equal pieces, the pieces are called halves. They learned that when a shape is partitioned into 4 equal pieces, each piece is called a fourth or a quarter.
In this lesson, students learn that when a shape is partitioned into 3 equal pieces, the pieces are called thirds. They partition shapes into halves, thirds, and fourths. Fourths and quarters should be used interchangeably when discussing 4 equal pieces, so that students are comfortable with both terms.
Activity 2: No es eso
- Partition circles and rectangles into halves, thirds, and fourths, and describe the pieces.
- Hagamos medios, tercios y cuartos o cuartas partes.
- Each student needs 3 identical paper rectangles.
- Students could use 3 sheets of construction paper as their 3 rectangles. To save paper, construction paper could also be pre-cut into equal-size rectangles.
|Activity 1||20 min|
|Activity 2||15 min|
|Lesson Synthesis||10 min|
Teacher Reflection Questions
- How Are They the Same? (1–5), Stage 2: Grade 2 Shapes (Addressing)
- Which One? (K–5), Stage 3: Grade 2 Shapes (Addressing)