ScienceGrade 4ages 9–10
🌍 Day and night
It looks like the sun disappears at night and comes back in the morning, but the sun doesn't move at all — Earth spins, and night is simply the side facing away from it.
Try this lesson freeNo card needed. The first lesson is free.
Download on the App StoreWhat your child learns
- Earth spins around itself.
- The side facing the sun — day.
- The side facing away — night. The sun is still shining there.
- Clouds do not swallow the sun every night.
The mistake most kids make here
The sun goes to sleep, or walks around the house.
Try one question
Why is there night?
Why night
- the sun goes to sleep
- Earth turns away from the sun
- clouds eat the sun
Answer
Earth turns away from the sun — That's it. Our spin, not its sleep.
How Maya teaches it
Your child tells Maya what they did in class. She teaches this topic at her desk, asks questions with tappable answers, and when the answer is wrong she explains why that answer was tempting instead of saying “try again”. She remembers what did not land and comes back to it.
Your child has it when they can: Say why there is night if the sun did not switch off.
How to help at home
From where we stand, the sun really does seem to rise, cross the sky, and set, so 'the sun goes to sleep' or 'moves around the house' is a completely reasonable guess based on what a child sees. The truth requires imagining something that can't be directly observed: our own spinning.
Tonight, try this with a flashlight and a ball (or an orange and a marker dot for 'home'): shine the flashlight steadily while slowly spinning the ball. The dot moves into light and shadow even though the flashlight never moves — that's Earth and the sun.
If your child insists the sun goes somewhere at night, ask 'if the sun really went away, would people on the other side of the world still see it?' They do — which means the sun didn't go anywhere; we turned away from it.
A good sign they've got it: they can explain that it's Earth spinning, not the sun moving, when asked why day turns into night.
Questions parents ask
- Why does my child think the sun goes to sleep at night?
- Because from any one spot on Earth, the sun does appear to rise, cross the sky, and disappear, which looks exactly like it's the sun that's moving. It takes a physical demonstration, like a spinning ball under a flashlight, to show it's Earth turning instead.
- What actually causes day and night?
- Earth spins on its axis roughly once every 24 hours; whichever side faces the sun has day, and the side facing away has night — the sun itself doesn't move relative to Earth in this way.
- Is the sun still shining somewhere when it's nighttime for us?
- Yes — it's always daytime somewhere on Earth, on the side currently facing the sun, which is a good way to show a child the sun never actually goes out or away.
- How does Maya teach this differently from a globe demonstration?
- Maya asks why there is night and offers real options, including the child's own guess like 'the sun goes to sleep,' so the misconception gets tested against a question rather than only shown a model.
No card needed. The first lesson is free.
Download on the App StoreMore Science lessons
- Soil for plantsGrade 4
- A balloon sticks to hairGrade 4
- Rock and soilGrade 4
- The moon's shapeGrade 4
- Heat flowsGrade 4
- Solid liquid gas in the kitchenGrade 3
- A magnet pulls metalGrade 3
- Light in a straight lineGrade 3
Sources: Next Generation Science Standards