Jamal cut a rectangle into four equal parts. What are the parts called?
- Halves
- Wholes
- Fourths (correct answer)
- Thirds
Explanation: This question tests 1st grade understanding of partitioning circles and rectangles into halves and fourths (CCSS.1.G.3). When a circle or rectangle is divided into 2 equal parts, each part is called a half, and 2 halves make the whole. When divided into 4 equal parts, each part is called a fourth (or quarter), and 4 fourths make the whole. The scenario describes Jamal cutting a rectangle into four equal parts. Choice C is correct because four equal parts are called fourths. Choice A is a common error where students confuse fourths with halves, perhaps thinking of two parts; this happens because the vocabulary is new. To help students: Use real objects like rectangles or cookies to demonstrate partitioning; emphasize equal sizes; practice naming (halves, fourths); use hands-on cutting; reinforce that 4 fourths equal the whole.