Unit : science and technology

Prathomsuksa 61

Topic : parachute

Vocabulary

air resistance

gravity

pulling

falling

Structure

Passive voice

Passive voice is the one type of structureswhich was used when the focus is on theaction. It is not important or not known,however, who or what is performing theaction.

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.

The world’s best parachute

Objective

To begin understand air resistance, pulling and gravity.

Material

cotton thread

plastic bags

scissors

plasticine

How to make the world’s best parachute.

Step 1Cut out a square shape from plastic bag.

Step2Make some small holes at each corner of the square. Make four holds in all.

Step3Tie cotton thread of the same length to each one of the holes.

Step4The loose ends of the cotton should then be attached to a small piece of plasticine.

Step5After you have attached your plasticine (don’t forget that the weight has to be appropriate-not to heavy and not to light. )