ENTERENTER

TBC 3013TBC 3013

*********

LECTURER : ASSOC PROF DR SOPIA MD LECTURER : ASSOC PROF DR SOPIA MD YASSINYASSIN

ALTERNATIVE CONCEPTIONS ALTERNATIVE CONCEPTIONS

USER NAME :

PASSWORD :

GROUP MEMBERS

NAME MATRIC NO.

WONG SIEW CHING D20091034815

MARIA TING MEE SING D20081032208

PUI WAN TING D20091034840

UMI ABIBAH BT SULAIMAN D20091034811

SITI RAHAYU BT MOHAMED NOORD20091034855

ARTICLE

• Title:– Mistaken Beliefs About Where

Clouds Come From and Why It Rains

• Author:– David R. Wetzel

SCIENTIFIC EXPLANATION FOR CLOUD FORMATION

• Cloud formation is dependent upon the amount of water evaporating and condensing. Water molecules are continually changing state between solid, liquid and gas. When more molecules evaporate into the atmosphere than condense on earth, clouds can form.

• Cloud formation video

• Technique: – by using experiment

• Experiment about cloud formation:– Children are asked to place a lit match in a jar

with water and close the lid.– The match goes out and produces smoke.– Children are told this is example of how clouds

are formed

• This is why children have alternative concept that clouds are smoke.

Technique to Elicit Children’s Ideas about

Cloud Formation

Other Alternative Concepts About Clouds

• Clouds are sponges that hold water. • Clouds are water vapor.  • Clouds go to the sea and get filled

with water. • Clouds are formed by vapor from

kettles• Clouds are made of cotton and wool

SCIENTIFIC EXPLAINATION FOR RAIN FORMATION

• Rain occurs when the water droplets are sufficiently heavy to remain airborne they fall from the clouds.

• Water and rain cycle video

• Technique: – by using experiment

• Experiment about rain formation:– The hot water is boiled in the kettle.– A large pan filled with ice is placed above the kettle.– When the hot water in the kettle boiled, it produce steam.– The steam condense after reaching the cold pan and

become water droplets.– They fall when children shake the pan.

• This is why children have alternative concepts that rain comes from clouds sweating or rain occurs when clouds are shaken.

Technique to Elicit Children’s Ideas about Rain

Formation

OTHER ALTERNATIVE CONCEPTS ABOUT RAIN

• Rain occurs because we need it.• Rain comes from holes in clouds. • Rain occurs when clouds collide.• Rain is called by frogs.• The weather is so hot.• Cloud is crying.• Rain dance to call rain.

Reference

• Cloud Formation. Retrieve on 10 August from http://www.youtube.com/watch?v=uoHCMGBgIFQ

• David R. Wetzel(2008). Children's Science Misconceptions About Weather. Retrieve on 7 August from http://homeschooling.suite101.com/article.cfm/childrens_science_misconceptions

• Water and Rain Cycle. Retrieve on 7 August from http://www.youtube.com/watch?v=szXCuHOmnjg

THANK YOU!!!!