That night after dinner, Mom washed the dishes and Joy dried them.
"My report will be about building friendships.
I've already read my section of the book and looked up the topic on the Internet," Joy explained to her family.
"Katie's topic is exercise."
Katie was looking at her Be Healthy! book.
"I haven't read my section yet.
But I already know why exercise is good for us.
I just have to use my imagination, like Ms. Barrow said, to make my report interesting and fun."
"You should get the whole class to exercise together," said Joy.
"That's a good idea," said Dad.
"What kind of exercise?" asked Katie.
"Jumping jacks?" Joy sprang back from the sink and began doing jumping jacks.
Mom grabbed a mug from her hand.
"Don't break the dishes!"
"That definitely won't work for my report," said Katie.
"What about you, Grandpa?
"I get my exercise when I work in the garden and clean the house," said Grandpa.
"If kids just did their chores, they'd be healthy enough."
"Be serious, Grandpa," said Katie.
"I am serious!"
"Dad?" said Katie.
"You kids could run a race," Dad suggested.
"How about dancing?" said Joy.
"The polka!" said Grandpa.
He grabbed Joy, and they went flying around the kitchen.
"I'm getting dizzy, Grandpa!" Joy laughed.
"How about square dancing?" said Dad.
"Swing your partner!" he called.
He hooked his elbow through Joy's and swung her around in a circle.
"I think we have some square-dancing music at the library," said Mom.
"This might be kind of fun—and funny!" said Katie.
She thought for a moment.
"I'll have to show the steps to the class.
Will you help, Joy?"
"Sure!"
"And tomorrow I'll ask Carlos and Luke . . ."
Katie groaned and slapped her forehead.
"Rats! I almost forgot!
I'm mad at Luke."
"You'll have to forgive him," said Joy.
The next morning, Joy spotted Luke and Carlos.
"They're talking to Olivia as usual," muttered Katie.
Olivia turned toward the twins.
"I brought you a present," she said.
"An 'ALOHA' pencil from Hawaii."
She handed Katie and Joy each a bright pink pencil.
"Thanks!" said Joy.
Katie thanked her too.
"Guess what 'aloha' means," said Carlos.
"It means hello, right?" said Joy.
"Yep," said Olivia. "But it also means good-bye!"
"That's weird," Katie couldn't help saying.
Luke looked at her.
"Are you still mad at me?" he asked.
"No," said Katie. "In fact, I'm even going to let you help with my exercise report. Interested?"
"Sure," said Luke.
"If you're looking for guys who are good at sports, you've come to the right place."
"What about you, Carlos?" said Katie.
"Yeah, I'll help." Carlos bent his arm and felt his muscle.
"We could do some push-ups."
"No, I decided against push-ups," said Katie.
"I need your help with square dancing."
"SQUARE DANCING!" roared Luke and Carlos.
"No way!" said Carlos.
"No square dancing!" said Luke. "No dancing of any kind!"
"Sorry. It's too late to back out," said Katie.
"You already agreed."
"But we don't know how to square-dance, do we, Luke?"
"No problem," said Katie.
"We're going to practice at my house on Saturday."
"That sounds like fun!" said Olivia.
Katie blinked. "Does Olivia think I'm including her too?" she wondered.
"Er . . . I only need four people," she said quickly.
"Two boys and two girls—Luke, Carlos, Joy, and me.
We'll teach the steps to the rest of the class."
"Oh," said Olivia, looking down.
Joy looked down too.
She wanted to invite Olivia, but she knew she couldn't.
It was Katie's project.
Katie turned back to the others.
"So we're all set," she said.
"Don't forget—Saturday afternoon at one o'clock.
And don't forget your cowboy hats! HA!"