There's a new kid at Camp Dakota! It's Megan's first year, and all she can think about is riding horses. But gravity seems to be getting in the way of all the campers' fun, from the stables to the beach. Then the big cuckoo clock in the main cabin goes missing. Who would take a cuckoo clock? Can the campers use the weighty facts they've learned to solve the mystery of where it went-and why?

There's something fishy going on in the lake at Camp Dakota . . . and it sure isn't the fish! The campers have discovered some smelly, green gunk in the water. Yuck! The creek seems to be source of the pollution, but how can they stop it? And why is a trash-covered duck leading them on a wild goose chase?

When Jordan finds a treasure map at Camp Dakota, the hunt for hidden treasure is on! As the campers follow the map, they discover that time has changed some of the landmarks. They'll need to rely on what they know about rocks and changes to Earth's surface to have any chance of success. Will the old drawing still lead them to the treasure? And why is Jordan acting so weird? Look in the back of the book for experiments and more to help you become a...

When several campers at Camp Dakota report missing items and begin pointing fingers at a fellow-camper, a group of children search for the culprit. Includes glossary and experiments

When Jordan finds a fossilized log with a map inside, the campers of Camp Dakota set out in search of treasure, but since erosion and weathering have changed the landscape they must use their knowledge of geology to follow the landmarks on the map. Includes glossary and experiments

Hearing strange murmuring near the lake, campers Braelin and Megan search for the ghostly voices, putting their new knowledge of sound and amplification to good use

It's the end of the summer at Camp Dakota-and things are about to get hairy. The kids have adaptations on their minds. And after one camper notices Counselor Kyle's suspicious late-night activities, they begin to suspect that Kyle is turning into a werewolf. Is there another explanation? Or have the campers discovered a terrible secret? Look in the back of the book for experiments and more to help you become a science detective too!

A Mystery about Sound: It's a dark and stormy morning at Camp Dakota, but that won't keep Braelin from investigating the whispers coming from the lake. What else could it be, but ghosts? The campers try to record and amplify the sounds, but suddenly the eerie voices go mute. Braelin and Megan won't give up, even when their ghost hunt leads them deep into the woods. Can they use their sound smarts to get back safe? Look in the back of the book for...

A Mystery about Rocks: When Jordan finds a treasure map at Camp Dakota, the hunt for hidden treasure is on! As the campers follow the map, they discover that time has changed some of the landmarks. They'll need to rely on what they know about rocks and changes to Earth's surface to have any chance of success. Will the old drawing still lead them to the treasure? And why is Jordan acting so weird? Look in the back of the book for experiments and more...