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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.

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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 happened to the moon's shape over the four weeks?
  3. 3. What was kept the same when the drawings were made?
  4. 4. What shape was the moon in week 3?
2.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
3.After the full moon, what happens to the shape night by night?
  • A.It stays full
  • B.It gets bigger
  • C.It gets smaller again
4.What do we call the moon when it is a full round circle?
  • A.A full moon
  • B.A half moon
  • C.A new moon
5.The moon was a full circle last night. About how long until it is full again?
  • A.One year
  • B.One night
  • C.About four weeks
6.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
7.The moon is a thin curve and getting bigger each night. What shape comes next?
  • A.A thin curve again
  • B.Half a circle
  • C.A square

LessonPrint · 1-ESS1-1 · Set 10 · free to copy for classroom use

Answer key — Moon Shapes for Four Weeks

Set 10. Prints on its own sheet.

  1. 1.1. The moon's shape changes in a pattern that can be predicted. 2. It grew from a thin curve to a full circle and then began to shrink. 3. They were drawn at the same time each week. 4. A full round circle.
  2. 2.Predict the shape you will see next week
  3. 3.It gets smaller again
  4. 4.A full moon
  5. 5.About four weeks
  6. 6.A full round circle
  7. 7.Half a circle

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