Science · Stage 3
The Moon, Earth and Sun
The Moon's look changes across the month — and Earth, Sun and Moon are all round like balls!
✦ Science📘 Stage 3 · S3⏱ ~9 min🧒 Ages 7–8★ Free to start
explain that the Moon's look changes across the month, and that Earth, Sun and Moon are roughly spherical.
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Kavi Watches the Moon
Every night Kavi looks up at the sky 🌙. "Last week the Moon was a thin crescent 🌒. A few nights ago it was half 🌓. Tonight it is a big, round full Moon 🌕! And some nights I can't see it at all 🌑." Kavi smiles. "The Moon's look keeps changing across the month. And did you know the Moon, our Earth 🌍 and the Sun ☀️ are all round like balls? Let's find out!"
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What your child will learn
1The Moon changes across the monthThe Moon looks different on different nights. It grows from dark to full, then shrinks back again — and the whole cycle takes about a month. Tap each one.
2Full Moon vs New MoonThe same Moon can look completely different from one night to another. Tap each card.
3Three round neighbours in spaceEarth, the Sun and the Moon are all roughly spherical — round like a ball, not flat like a plate. Tap each one.
4Your turn: explain the MoonThink like a scientist — guess first, then tap to check!
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A peek inside
Kavi sees a big, bright, round circle in the night sky 🌕. What is this phase of the Moon called?
When we can see the Moon's whole round, bright side, it is a full Moon.
Try this at home: What do we call the Moon when it looks like a big, bright, round circle?
Ready to play and learn?
Start the free interactive lesson, or print the handout for screen-free play.
Part of Science · Stage 3 · S3 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.