The Purpose is to explain how something works or why something happens
Write in second personWrite in third personusing words likeusing words like She
 Her
 He
His
Their
Him
Them
They
It   You
They ate crayfish last week at the birthday party.She is going to eat her lunch now. GamesHe was in the classroom yesterday.He is not here now.
Write a title Write an introductionWrite a question or a brief descriptionUse second or third personUse present tenseUse technical languageHow does rain fallHow does rain fall from the sky? Rain falls from clouds that are made of tiny droplets of water.Introduction
ImportantPoints in orderWhen the clouds get heavy the droplets are forced together and they get bigger and heavier and fall to the ground.The cool water droplets gather together and form clouds.Water droplets are formed when moisture evaporates from the earth.Water comes from warm air that rises from the ground.
So rain falls from the sky when the tiny droplets have become too heavyto stay as a cloud.ConclusionCould include…A summaryA comment about its useA recommendation
Other words for ‘and’EitherBeforeAfterWhen WhileUntil AlthoughSinceEven ifBecauseNot onlyNorBut alsoonceButOr SoAsAs ifAs long asNeitherGames

How to write Excellent Explanations