Cody and his friend Maria find themselves in the middle of several mysteries as they search for a missing emerald necklace.
As Stalin's purges and arrests increase, Sasha and his mother plan to leave Russia to join his father and older sister who have emigrated to Riga, Latvia.
After having left Russia to live in freedom in Latvia, Sasha finds his adopted country increasing under threat of invasion from Hitler's growing war machine.
Sasha tries to adjust to his new life in the United States, but his thoughts keep returning to the deepening troubles in his home country, Latvia, as Hitler's bombs fall on Riga in June of 1941.
After being adopted by Michael's family and moving from Mexico to Dallas, Javier tries to adapt to life in the United States but realizes he misses his old life in Vera Cruz, Mexico.
Eighth-grader Derrick wants to be a stand-up comedian, but his football coach, his parents, Joe, his boss at Taste of Italy, his English teacher Dowling the Dragon, and his Mr. Perfect older brother Craig don't think he's so funny. When Derrick discovers he needs a B on an English paper to stay eligible for football, how can he tame his smart mouth to stay out of trouble?
While on detention for disrupting a science lesson, Kenneth and Aleesa are transported to 1939 where they try to protect the privacy and even the life of Albert Einstein as he struggles to decide whether he should help build an atomic bomb to stop Hitler. Can they stop the Nazis from getting the atom bomb first?
While spending the summer on his grandparents' Texas cotton farm, Michael sees a teenage boy on the other side of the Rio Grande in Mexico. He starts to write letters to Javier, and then helps him cross the river to come into the United States.
Brothers Tim and Josh find themselves alone in the wilderness after surviving a plane crash in which the pilot dies and must make their way back to civilization.
David and his family use his grandfather's time travel machine to travel to 1853 Ohio, where they assist runaway slaves on their journey north on the Underground Railroad.
Cody Smith and his friends are immersed in mysteries for each of the holidays.
The Smithers family find Grandpa's old time machine and decide to travel back to 1880 for their summer vacation. David and Jenny learn a lot about their heritage and history on their incredible trip.
Kenneth and Aleesa, working on an extra credit project about Socrates, suddenly find themselves in ancient Athens, where they meet the famous philosopher and try to save his life.
David and his family travel back in time to San Antonio, Texas in 1836 and meet brave defenders of the Alamo such as Davy Crockett.
David travels back in time to 1906 San Francisco to try to save the lives of Antonio Giovanni and his family who were victims of the devastating earthquake.
While studying migrant farm workers of the 1960's, Kenneth and Aleesa travel back in time and meet Cesar Chavez during the farmworkers' strike for fair treatment and better pay. Can they protect Chavez and his dream for his people from sabotage?
David and his family meet William Henry Lewis, an African American football hero who travels to the future with them when he's injured.
David and his family use his grandfather's time travel machine to go back in time to the Chicago where David is teaching four boys to speak English as he experiences the Chicago World's Fair. .
David and his family travel back in time to California in 1849 to experience the ups and downs of prospecting for gold.
This book presents the diary of Gertrud Schakat Tammen in which she recorded her experiences growing up in Germany during World War II and how her family lost their home and had to search for a new home and a new life.
This book presents the diary of Gertrud Schakat Tammen who grew up in Germany during World War II. This portion of her diary relates her experiences as World War II began.
Ty thought he was aware of all of his food allergies, but after he collapses on the sidewalk due to an allergic reaction, the Koots hope to find the cause of his illness by following food clues.
Determined to identify the large four-legged creature sighted by Abe on a stormy night, the Koots find their first clue to be a hugh paw print.
The Koots try to find answers to unexplained questions about an old car.
When the Koots decide to dig a hole in an abandoned lot big enough to house "The Kooties Club Cave," they are suprised to find an old rusty knife which leads to further excavations to uncover its still hidden victim.