Crabs

Tuesday (22/03/2011) a) Brainstorming Kids: Crabs walk sideways. They have claws. We can eat the meat. • Most crabs live in salt water. Crabs that lived by the beach will dig small holes as their homes to protect themselves from waves and predators. Small crabs are from millimeters and the biggest is the Giant Spider Crab nearby Japan ocean; eve taller than a man. Crabs eat anything from small to big animals. They also eat carcass which make them toxic. They have 8 walking legs and 2 claws. Males have a bigger claw than the other and its abdomen is sharper and longer. The claws are used to battle, for communication and also to attract mates. Crabs lay eggs. There are about 1000 types of crabs such as horseshoe crab which is older than dinosaurs and also hermit crab that searches for new homes when they outgrown. b) Crab Anatomy • I drew a huge crab on the board. Chun Kit asked about its content beneath the shells. Of course, we guessed together. Then, I showed them an anatomy picture of a crab. It has got heart, stomach, gills to allow it swim in the ocean but no bones. It has a antenna to search food and mates. Its shell is its protection. c) Exploring the real crab. • We went to the kitchen and identified its body part. It was a male. I opened its shell and found its gill. Yun Xin asked if crab has got blood. Oh….gosh…we didn’t find any. I have not thought of that….thus; I got the kids to ask their family members while I seek the answer too. d) Crab drawing. • The kids could either place their 2 palms onto the paper and sketched them on the paper. However, Jun Yu asked if he could draw like the one I drew on the board. Of course, the kids started making their choices. The younger ones, I guided them drawing using their 2 palms. Then the kids coloured them with crayons.