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Series Description: Best friends and stepbrothers Phineas and Ferb are determined to make each mind-numbing rotation of Earth into something special. But their sister, Candace, is determined to reveal their crazy endeavors to their mom. Meanwhile, Perry the Platypus-Agent P-is called on repeatedly to save the world from the dangerous Dr. Doofenshmirtz. Spend some time with Phineas and Ferb and see just how exciting and outrageous a summer's day can really be!

Chapter Book #6: Daredevil Days

When Phineas and Ferb find out that their Grandma Betty Jo used to be a roller derby queen, they build an awesome rink-right in their backyard! Soon they discover that Jeremy Johnson's grandma also used to be a skating champ, and they set up a contest to see which granny can roller derby their way to the finish line the fastest. But Candace doesn't like this idea one bit. After all, she has a huge crush on Jeremy and worries that her grandma will outskate his! The thrills continue when Phineas and Ferb build a gorge so their Grandpa Fletcher can do an awesome stunt jump over it!

105 pages, Paperback

First published February 16, 2010

17 people are currently reading
56 people want to read

About the author

Molly Mcguire

6 books1 follower

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5 stars
44 (45%)
4 stars
25 (26%)
3 stars
20 (20%)
2 stars
6 (6%)
1 star
1 (1%)
Displaying 1 - 6 of 6 reviews
17 reviews
February 21, 2013
The best thing about this book was the use of new vocabulary words for my son to learn. I did not anticipate this in a cartoon book.
3 reviews
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December 14, 2021
alright
This entire review has been hidden because of spoilers.
1,290 reviews
January 21, 2026
Grandma Betty Jo and Grandpa Fletcher take part in the current two summer days adventures with Phinehas and Ferb. Fun story with great pictures
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1,242 reviews
August 29, 2025
this was cute, but reading it took much longer than just watching the episodes would have, and they lose a lot without the visuals.
Displaying 1 - 6 of 6 reviews