A Wonderleaf question
Why do we blink?
a real page from the book
We blink to keep our eyes wet, clear, and guarded. Each blink spreads a thin tear film over the cornea, the clear front window of the eye, so it can see sharply and stay comfortable. Blinking also brushes away specks before they scratch or bother us.
A blink can close in about one tenth of a second, yet your child does not notice the dark gaps because the brain smooths the pictures together. Blinks change with what we are doing too: screens slow them down, chatter and hard thinking often bring more.
Wonder words
- cornea
- reflex
- pollen
- mucus
Try it out
Count blinks for one minute during a story, then during a quiet stare at the wall, and compare the totals.
Read the whole picture book
Watercolour scenes, straight answers, about three minutes cover to cover.
Open the picture bookKeep wondering
- Why does hair grow?
- How do germs get inside the body?
- Why do we cry tears?
- Why do we sweat?
- Why does my stomach growl?
- Why do we have a belly button?
And the next question?
Ask anything — Wonderleaf writes and illustrates a picture book for it. That's the whole idea.
Ask your own question