Week 02 · The Zipper
Monday
Meet the zipper
// Rows of hooks and a slider that is a wedge
⏱ about 15 min
Monday: Meet the Zipper
Rocket zips a coat up and down, up and down. Zzzip!
"How does it know how to close?" Rocket asks.
Raven holds the open coat up to the light.
"What do you notice? Look at the two edges," Raven says.
Nova glows over the little metal part.
"Would you like a hint? Watch what moves," she says.
Where zippers live
Zippers close coats, bags, boots and tents.
A zipper is a small machine.
It does a big job: it holds two edges together.
The parts
| Part | What it does |
|---|---|
| Teeth | Two rows of little hooks |
| Cloth strips | Hold the teeth in a row |
| Slider | Moves up and down the teeth |
| Pull tab | The little handle you hold |
Each tooth has a bump and a dip.
The teeth on one row fit the gaps on the other row.
When they lock together, the zipper is closed.
ZIPPER PARTS
- Read the question.
- Tap your answer.
What are the two rows of little hooks called?
Which part moves up and down?
What does each tooth have?
What job does a zipper do?
Read the parts table and the story.
| Sentence | True or false? |
|---|---|
| A zipper is a small machine. | ? |
| The slider stays still while you zip. | ? |
| The teeth on one row fit the gaps on the other. | ? |
| Zippers only live on coats. | ? |
WHY THIS EXERCISENaming the parts helps you see how they work together.
Try it
Find a zipper on your coat or a bag.
Zip it slowly. Watch the teeth meet.
Unzip it slowly. Watch them come apart.
Zip it slowly. Watch the teeth meet.
Unzip it slowly. Watch them come apart.
Safety first
Only use a zipper a grown-up says is okay.
Zip slowly so the slider does not pinch your skin.
Zip slowly so the slider does not pinch your skin.
STORY CHECK
- Read the question.
- Tap your answer.
What did Raven ask Rocket to look at?
What sound did the zipper make?
Draw a zipper. Label the teeth and the slider.
You met the zipper and its parts. Great noticing!
Tomorrow we learn the secret inside the slider.