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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.

Set 20 of 25 · the same problems every time you open this link.

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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 claim does this record support?
  2. 2. What shape was it in week 1?
  3. 3. What was kept the same when the drawings were made?
  4. 4. What does this record not tell you?
2.After the full moon, what happens to the shape night by night?
  • A.It stays full
  • B.It gets smaller again
  • C.It gets bigger
3.Why is a moon diary useful?
  • A.It makes the moon change
  • B.It shows how far away the moon is
  • C.It shows the pattern, so you can predict the next shape
4.The moon is a thin curve and getting bigger each night. What shape comes next?
  • A.A square
  • B.Half a circle
  • C.A thin curve again
5.Does the moon's shape change in a pattern?
  • A.No, it changes at random
  • B.Yes, the same shapes come back about every four weeks
  • C.No, it is always round
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.Just before the thin curve appears again
  • C.At the half moon
7.Can the moon sometimes be seen in the daytime?
  • A.No, never
  • B.Yes, on some days it is in the sky with the sun
  • C.Only in winter

LessonPrint · 1-ESS1-1 · Set 20 · free to copy for classroom use

Answer key — Moon Shapes for Four Weeks

Set 20. Prints on its own sheet.

  1. 1.1. The moon's shape changes in a pattern that can be predicted. 2. A thin curve, like a fingernail. 3. They were drawn at the same time each week. 4. It does not tell you what the moon looked like between the weeks.
  2. 2.It gets smaller again
  3. 3.It shows the pattern, so you can predict the next shape
  4. 4.Half a circle
  5. 5.Yes, the same shapes come back about every four weeks
  6. 6.Just before the thin curve appears again
  7. 7.Yes, on some days it is in the sky with the sun

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