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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 3 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 happened to the moon's shape over the four weeks?
  2. 2. What shape was it in week 1?
  3. 3. What shape would you expect in week 5?
  4. 4. What shape was the moon in week 3?
2.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
3.You know today's moon shape. What can you do with the pattern?
  • A.Predict tomorrow's weather
  • B.Make the moon full sooner
  • C.Predict the shape you will see next week
4.What do we call the moon when it is a full round circle?
  • A.A full moon
  • B.A new moon
  • C.A half moon
5.Does the moon's shape change in a pattern?
  • A.Yes, the same shapes come back about every four weeks
  • B.No, it changes at random
  • C.No, it is always round
6.Why is a moon diary useful?
  • A.It shows how far away the moon is
  • B.It makes the moon change
  • C.It shows the pattern, so you can predict the next shape
7.The moon is half a circle and growing. What comes after that?
  • A.No moon at all
  • B.A full round circle
  • C.A thin curve

LessonPrint · 1-ESS1-1 · Set 3 · free to copy for classroom use

Answer key — Moon Shapes for Four Weeks

Set 3. Prints on its own sheet.

  1. 1.1. It grew from a thin curve to a full circle and then began to shrink. 2. A thin curve, like a fingernail. 3. A thin curve again, because the shape is shrinking after the full circle. 4. A full round circle.
  2. 2.Just before the thin curve appears again
  3. 3.Predict the shape you will see next week
  4. 4.A full moon
  5. 5.Yes, the same shapes come back about every four weeks
  6. 6.It shows the pattern, so you can predict the next shape
  7. 7.A full round circle

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