The document provides instructions for making a parachute out of simple materials like cotton thread, plastic bags, and plasticine. It explains that the cotton threads should be tied to four small holes cut into a square plastic bag, with the loose ends then attached to a small ball of plasticine. When dropped, the plasticine-weighted plastic bag harness will float down slowly through the air due to air resistance on the bag, demonstrating scientific principles of gravity, air resistance, and parachuting.

1. Unit : science and technology
Topic : parachute
Prathomsuksa 61

3. Vocabulary

4. air resistance

5. gravity

6. pulling

7. falling

8. Structure

9. Passive voice
Passive voice is the one type of structures
which was used when the focus is on the
action. It is not important or not known,
however, who or what is performing the
action.

10. Form
Subject + Verb to be + Past Participle
(is, am, are) (Verb 3)
Example
The loose ends of the cotton should then
be attached to a small piece of plasticine.

11. The world’s best parachute

12. Objective
To begin understand air resistance,
pulling and gravity.

13. Material

14. cotton thread
scissors
plastic bags
plasticine

15. How to make the world’s best parachute.

16. Step 1
Cut out a square shape from plastic bag.

17. Step2
Make some small holes at each corner of the square.
Make four holds in all.

18. Step3
Tie cotton thread of the same length to each
one of the holes.

19. Step4
The loose ends of the cotton should then be
attached to a small piece of plasticine.

20. Step5
After you have attached your plasticine
(don’t forget that the weight has to be appropriate-
not to heavy and not to light. )