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Grades 3–6ScienceSpaceLesson 1 of 3Ages 8–12

Years 4–7 in England and Wales · Cambridge Primary Stage 4 to Lower Secondary Stage 7 · IB PYP to MYP 1, ages 8–12

Why do stars come out at night?

Teams sort ten real star cards by distance and then by how bright each star looks, and pace out the distances as a human line. They find that the nearest star after the Sun is too faint to see, explain why the Sun outshines every other star and where the stars go in the daytime.

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First page of the Why do stars come out at night? teacher guide
A child at a window at dusk, with the Sun setting behind the hills and the first few stars appearing in the darkening sky.Preview · the opening mission

Read this to the class:

Amira's little brother looked out of the window at bedtime. "The stars just came out," he said. "Where were they all day? Were they asleep?" Amira wasn't sure. And why are some stars bright and some faint? Your team's job: use real data about ten stars to find out why the stars come out at night and why some look brighter than others.

Teams of three, with three rotating jobs: Reader (reads each card aloud), Sorter (moves the cards) and Recorder (writes the orders on the sheet).

Look inside the PDF

Sample pages, stamped “preview”. The download is the clean, full lesson.

Teacher guide, page 1
Inside: the lesson steps
Student sheet, ready to copy

In the full lesson PDF

8 printable pages

  • Predict (5–10 min)
  • Hunt (20 min)
  • Reveal (10–15 min)
  • Act (10 min)
  • Background for the teacher
  • Assessment
  • Student sheet
  • Worksheet: Star cards
  • Worksheet: Label it
  • Worksheet: Try it at home

On the student sheet

  • My prediction
  • Our two rows
  • The two surprises
  • A note to Amira's little brother
  • Exit ticket
  • Star cards
  • Label it
  • Try it at home

US Letter, prints cleanly in black and white. The student sheet is on its own page, ready to photocopy.

Free with an account (any 3 lessons), or US$19 for all 3 lessons in this unit.

What students show by the end

  • The Sun is a star
  • Brightness and distance
  • Stars in the daytime

From the lesson’s rubric, which scores each one as not yet, getting there or got it.

Questions teachers ask

How long does “Why do stars come out at night?” take?

45–60 min. Group size: teams of 3.

How much prep does it need?

10 minutes. Print the Star cards worksheet, one set per team, and cut each set into ten cards. Print one more set, larger if you can, for the human line. Clear a straight path about 5 m (16 ft) long from the front wall, across the room or along a corridor.

What materials do I need?

None. No materials needed: just the printed sheets.

Which curriculum standards does it cover?

NGSS (US): 5-ESS1-1. It also matches England National Curriculum, Year 5; England National Curriculum, Key Stage 3 and Cambridge Primary Science (not endorsed by Cambridge).

What’s in the lesson PDF?

A teacher guide that walks you through predict, hunt, reveal, act, background for the teacher and assessment, then a student sheet (“My prediction”, “Our two rows”, “The two surprises”, “A note to Amira's little brother”, “Exit ticket”, “Star cards”, “Label it” and “Try it at home”) on its own page, ready to photocopy. It’s US Letter and prints cleanly in black and white.

Can I try it for free?

Yes. A free account includes any 3 full lessons of your choice, and this can be one of them. After that, this unit is US$19 for all 3 lessons, yours to keep, or every lesson is US$199 a year.