A collection of riddles relating to dinosaurs, such as "What do you get if you cross a dinosaur with a rabbit? Tricerahops!" and "What did dinosaur campers cook over the fire? Dino-s'mores!".
A collection of riddles about geographic names, including "Why would you wear lots of sweaters in a certain South American country? Because it's Chile (chilly).".
Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle.
By solving math problems on a calculator and turning it upside down to view the answer, riddles can be solved in this collection of calculator riddles.