We can paint

Wednesday (23/03/2011) a) The molting crabs. • Kids grow, there are signs such as falling teeth, grow taller and of course new clothes for bigger size. • Crabs too grow by molting. First, they eat a lot and absorp a lot of sea water. A soft layer is formed below the shell. When its ready, the day before it molt, it will absorp lots of sea water and blow up like a balloon and will finally crack. It will leave its whole body with a new soft shell. At this moment, it takes the crab a week to be vulnerable as its shell become harder. b) Do crabs have blood? Zheng Yuan: My mother said its blood is white. Jun Yu: With bones, got blood. No bones, no blood. • Well, humans have hemoglobin to produce red blood but crabs have something different. Wee Xuan was correct. The crabs blood is the transparent liquid when I peeled off the crab’s shell. However some crabs such as Horshoe crab has got blue blood. c) Painting • Kids chose their favourite colour of blue, yellow or red to paint the crab’s background. However, the water colour will not cover the crayon because it’s made of wax. • They were beautiful paintings. Then, kids chose stickers of different colour and drew pictures to paste on their art piece after it was dry.