The King Crab

Monday (13/04/2009)

(a) Tongue twister
“ She sells sea-shells on the sea shore.
The shelss that she sells are sea-shells, I’m sure.”
The kids explained the meaning. Then, they read it from the speed of slow to medium and very fast.
They enjoyed it as they almost twisted their tongues.

(b) Flash cards
We recapped some of the key words learnt throughout this topic. Some included: float, clean water, starfish, ship, ice-cream and etc.

(c) The King Crab
Known also as Horshoe Crab. However, the kids preferred it to be called King Crab.
It is not a crab but related to scorpions and land siders.
The shell is very tough which protects it from predators.
They existed about 250 million years ago before dinosaurs.
It has 2 compound eyes, 2 median eyes (light receptor), 10 legs (plus 2 claws; if males) and a tail.
The tail is similar to steering that would determine its swimming and moving direction.
In the ocean, it can swim upside down. It breathes through its gills.
It also walks on the seabed eating worms and mollusks such as clams.
It is so tough that it can survive without eating for a year.
During high tide, the waves would wash them to the sand. The females would dig holes and lay 20,000 pearly green eggs. The males would hatched the eggs.
Just like crabs, it molts. Each time it molts, it gets larger. However, the new molt King Crab are usually the food of fish.
People and also Migratory birds eat their eggs.
Chinese medication uses its shell to help blood clog.
Some use them as fertilizer and slao poultry food.