Symmetry is when two halves of something match like a mirror.
Look at this butterfly. The left wing and the right wing are the same shape — just flipped. That is symmetry!
In this lesson you will fold, mirror, spin, and hunt for symmetry — just tap and play. Ready? Press Next. 👉
A line of symmetry is a line where you could fold the picture and both halves land exactly on top of each other.
Tap the button to reveal where this butterfly folds in half.
The left side has a pattern. Tap the right-side squares so the right half becomes a perfect mirror of the left. The dotted line is the mirror!
A shape only has symmetry on the line where both halves match. Tap the correct line of symmetry for this heart.
Tip: imagine folding the heart along each line.
A butterfly has just one line of symmetry. But a square has four, and a circle has endless lines!
The more ways a shape can fold to match itself, the more lines of symmetry it has.
Some shapes look the same when you turn them — even without a mirror. This is rotational symmetry. A pinwheel is a great example!
Tap a few times. Each quarter turn, the pinwheel matches its starting picture.
Symmetry is all around Singapore — leaves, faces, the Merlion, even letters! Tap every picture that has a line of symmetry.
Found: 0 of 4 symmetrical pictures
You can now spot symmetry everywhere. Here's what you learned:
Challenge: Look around your room right now. Can you find one thing with a line of symmetry? 👀
Great work, symmetry spotter! 💜