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Moon Shapes for Four Weeks is a free printable Grade 1 science worksheet on describing and predicting the moon's changing shape from a class diary, aligned to NGSS performance expectation 1-ESS1-1. It prints 7 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Moon Shapes for Four Weeks

1-ESS1-1

NameDate

Read the record, then answer the questions.

1.Read the record, then answer the questions.

Moon Shapes for Four Weeks

Drawings the class made of the moon, one each week for four weeks. THE MOON WE DREW Week 1: a thin curve, like a fingernail Week 2: half a circle Week 3: a full round circle Week 4: half a circle again, the other side We drew it at the same time each week.

  1. 1. What shape was it in week 1?
  2. 2. What does this record not tell you?
  3. 3. What claim does this record support?
  4. 4. What shape would you expect in week 5?
2.After the full moon, what happens to the shape night by night?
  • A.It gets smaller again
  • B.It gets bigger
  • C.It stays full
3.What do we call the moon when it is a full round circle?
  • A.A new moon
  • B.A full moon
  • C.A half moon
4.The moon is a thin curve and getting bigger each night. What shape comes next?
  • A.Half a circle
  • B.A square
  • C.A thin curve again
5.Can the moon sometimes be seen in the daytime?
  • A.Yes, on some days it is in the sky with the sun
  • B.Only in winter
  • C.No, never
6.On some clear nights the moon cannot be seen at all. When in the pattern does that happen?
  • A.At the full moon
  • B.At the half moon
  • C.Just before the thin curve appears again
7.Why is a moon diary useful?
  • A.It shows the pattern, so you can predict the next shape
  • B.It shows how far away the moon is
  • C.It makes the moon change

LessonPrint · 1-ESS1-1 · Set 7 · free to copy for classroom use

Answer key — Moon Shapes for Four Weeks

Set 7. Prints on its own sheet.

  1. 1.1. A thin curve, like a fingernail. 2. It does not tell you what the moon looked like between the weeks. 3. The moon's shape changes in a pattern that can be predicted. 4. A thin curve again, because the shape is shrinking after the full circle.
  2. 2.It gets smaller again
  3. 3.A full moon
  4. 4.Half a circle
  5. 5.Yes, on some days it is in the sky with the sun
  6. 6.Just before the thin curve appears again
  7. 7.It shows the pattern, so you can predict the next shape

Last reviewed 2026-09-05. Aligned to 1-ESS1-1 of the Next Generation Science Standards.