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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 21 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 shape was it in week 1?
  3. 3. What happened to the moon's shape over the four weeks?
  4. 4. What was kept the same when the drawings were made?
2.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
3.The moon is half a circle and growing. What comes after that?
  • A.A thin curve
  • B.A full round circle
  • C.No moon at all
4.The moon was a full circle last night. About how long until it is full again?
  • A.One night
  • B.About four weeks
  • C.One year
5.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
6.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
7.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

LessonPrint · 1-ESS1-1 · Set 21 · free to copy for classroom use

Answer key — Moon Shapes for Four Weeks

Set 21. Prints on its own sheet.

  1. 1.1. A thin curve again, because the shape is shrinking after the full circle. 2. A thin curve, like a fingernail. 3. It grew from a thin curve to a full circle and then began to shrink. 4. They were drawn at the same time each week.
  2. 2.A full moon
  3. 3.A full round circle
  4. 4.About four weeks
  5. 5.Yes, on some days it is in the sky with the sun
  6. 6.Yes, the same shapes come back about every four weeks
  7. 7.Just before the thin curve appears again

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