Monday, September 23, 2013

The Life Cycle of a Frog

There are five stages in the life cycle of a frog.  The first stage is the egg. The female green frog lays thousands of eggs at a time. This is called a frog spawn. They lay the eggs in jelly. They take a few days to hatch. 


frog spawn

When they hatch, a tadpole comes out.  This is the second stage. First, the tadpoles will eat their old shell.  Then they will also eat algae. 


newly hatched tadpoles

Tadpoles are the strangest stage.  Soon the tadpole will grow two strong back legs.  The tadpole is going to need to swim even faster then a fish or it will eat it.  Soon it will turn into a froglet.


developing tadpoles



The third stage, the froglet, is the first to breathe. The froglet is exactly the same as a frog, but it has a tail. 

froglet



At last the froglet will turn into a frog. This is the fifth stage.  The frog has developed a sticky tongue to catch flies. The frog can walk, but it can't wait to jump!


adult frog


Tuesday, September 17, 2013

Scientific Inventions

The car is a scientific invention that makes a big difference in my life.  It's a dirty machine.  It moves us different places. And the TV changed my life. I can't imagine anything more scientific than watching electricity move. And the bath - you turn the wheel and water comes out. You can wash yourself. You can play with toy sharks.   All of these are good things.