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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 19 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 was kept the same when the drawings were made?
  2. 2. What happened to the moon's shape over the four weeks?
  3. 3. What claim does this record support?
  4. 4. What shape was it in week 1?
2.On some clear nights the moon cannot be seen at all. When in the pattern does that happen?
  • A.Just before the thin curve appears again
  • B.At the half moon
  • C.At the full moon
3.After the full moon, what happens to the shape night by night?
  • A.It gets bigger
  • B.It gets smaller again
  • C.It stays full
4.Why is a moon diary useful?
  • A.It makes the moon change
  • B.It shows the pattern, so you can predict the next shape
  • C.It shows how far away the moon is
5.The moon is a thin curve and getting bigger each night. What shape comes next?
  • A.A square
  • B.A thin curve again
  • C.Half a circle
6.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
7.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

LessonPrint · 1-ESS1-1 · Set 19 · free to copy for classroom use

Answer key — Moon Shapes for Four Weeks

Set 19. Prints on its own sheet.

  1. 1.1. They were drawn at the same time each week. 2. It grew from a thin curve to a full circle and then began to shrink. 3. The moon's shape changes in a pattern that can be predicted. 4. A thin curve, like a fingernail.
  2. 2.Just before the thin curve appears again
  3. 3.It gets smaller again
  4. 4.It shows the pattern, so you can predict the next shape
  5. 5.Half a circle
  6. 6.Yes, on some days it is in the sky with the sun
  7. 7.Yes, the same shapes come back about every four weeks

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