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Grade 3scienceStudents recognize and sequence the Moon's commonly observed phases as its visible shape changes in a repeating monthly pattern.

Moon Phases

Practice moon phases with 10 problems, an answer key, and a free printable PDF for Grade 3.

10 problems · Standards: 1-ESS1-1 · Difficulty: medium

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✅ Answer key included · ✅ Free for home & classroom use

Highlights

Grade: Grade 3
Subject: science
Topic: Students recognize and sequence the Moon's commonly observed phases as its visible shape changes in a repeating monthly pattern.
Pages: 3 · worksheet + answer key
Answer key: ✅ Included
Class time: about 15 min

1. When the Moon looks like a complete bright circle in the night sky, we call it a FULL moon. Is this statement true or false?
2. When we cannot see the Moon at all because the side lit by the Sun is facing away from Earth, this phase is called the NEW moon. Is this statement true or false?
3. Look at this Moon phase: [Drawing shows the right half of the Moon lit up, left half dark]. This phase is called FIRST quarter. What fraction of the Moon appears lit up: one-fourth, one-half, or three-fourths?
4. The Moon's shape appears to change in a pattern that repeats about every 30 days. Is this pattern called a month or a year?
5. Put these three Moon phases in the correct order as they appear in the sky: Full Moon, New Moon, First Quarter. Write the order using commas between the phase names.
6. A WAXING crescent Moon shows a small sliver of light on the right side. Does this phase come right after the New Moon or right after the Full Moon?

Showing 6 of 10 problems. The free PDF includes every problem plus the full answer key.

The free PDF includes all 3 pages — every problem plus the full answer key.

10 problems across 3 pages (worksheet + answer key)
Answer key included — every answer, ready to check
Standards: 1-ESS1-1
Skill: Students recognize and sequence the Moon's commonly observed phases as its visible shape changes in a repeating monthly pattern.
Suggested use: classwork, homework, or sub plans

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