¹     Matthew was shaking when he came into class. It was April. He was supposed to be warm. He hadn't put on a jacket when he came to school. On his walk to school he had realized his mistake. It was colder outside than he had expected.
 
²     Mrs. Kim saw that Matthew was shivering. She decided that this would be a good time for a science lesson. She thought a minute. Then she went to the science closet and got out some equipment. When the bell rang, she was ready.
 
³     "Br-r-r-r," said Mrs. Kim. "You all look so cold this morning. What happened?"
 
⁴     "It was nice and warm yesterday," said Matthew. "I wore my shorts to play in."
 
⁵     "I wanted to wear shorts today," said Megan. "But my mom said it would be too cold. I got mad because I didn't believe her. Now I am glad I listened."
 
⁶     "Spring is a very puzzling time of the year," responded Mrs. Kim. "Sometimes we don't know what the weather will be from one day to the next."
 
⁷     "Why is that?" asked Maddie.
 
⁸     "Let's see if we can figure it out," said Mrs. Kim. "How many of you like hot chocolate?"
 
⁹     Almost all the children raised their hands.
 
¹⁰     "Why is it called hot chocolate?" again asked Mrs. Kim.
 
¹¹     "Because we put it on the stove to heat it up," answered Chloe.
 
¹²     "That is right," said Mrs. Kim. "You had to have a source of heat to make the drink warmer. What if it is too hot to drink?"
 
¹³     "I blow on mine to cool it down," answered Andrew.
 
¹⁴     "I just let mine sit awhile," said Mark.

Paragraphs 15 to 39:
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