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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 18 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 shape would you expect in week 5?
  2. 2. What does this record not tell you?
  3. 3. What claim does this record support?
  4. 4. What was kept the same when the drawings were made?
2.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
3.What do we call the moon when it is a full round circle?
  • A.A half moon
  • B.A full moon
  • C.A new moon
4.You know today's moon shape. What can you do with the pattern?
  • A.Predict the shape you will see next week
  • B.Make the moon full sooner
  • C.Predict tomorrow's weather
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 half moon
  • B.At the full moon
  • C.Just before the thin curve appears again
7.The moon is a thin curve and getting bigger each night. What shape comes next?
  • A.Half a circle
  • B.A thin curve again
  • C.A square

LessonPrint · 1-ESS1-1 · Set 18 · free to copy for classroom use

Answer key — Moon Shapes for Four Weeks

Set 18. Prints on its own sheet.

  1. 1.1. A thin curve again, because the shape is shrinking after the full circle. 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. They were drawn at the same time each week.
  2. 2.It shows the pattern, so you can predict the next shape
  3. 3.A full moon
  4. 4.Predict the shape you will see next week
  5. 5.Yes, the same shapes come back about every four weeks
  6. 6.Just before the thin curve appears again
  7. 7.Half a circle

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