jigsaw (PAK 21)

1.  http://www.readingrockets.org/strategies/jigsaw


2. http://www.teachhub.com/jigsaw-activities-science-learning


3.  http://pa21mokhzanifadir.blogspot.my/2017/01/v-behaviorurldefaultvmlo.html


4. http://www.teachhub.com/jigsaw-activities-science-learning

5.  https://www.jigsaw.org/