"Will appeal to fans of other ­STEM-infused series like Emily ­Calandrelli’s 'Ada Lace' and Asia Citro’s 'Zoey and Sassafras.'"-- School Library Journal The fourth installment of the Kate the Chemist fiction series that shows kids that everyone can be a scientist! Perfect for fans of the Girls Who Code series. When Kate's brother Liam is having a science-themed birthday party the very same day that the science club in Kate's school is planning a special rocket launch experiment, Kate isn't sure how she'll manage to do it all: be a great big sister AND a great science club member. But with a little help from chemistry--and her friends--Kate figures out a way to be in two places at once. That is, until she is late to pick up the ice cream cake, which means Liam won't have a birthday cake for his party! Will science be able to save the day? From Kate the Chemist, chemistry professor and science entertainer as seen on The Late Show with Stephen Colbert , The Wendy Williams Show , and The Today Show, comes a clever and fun middle grade series that is the perfect introduction to STEM for young readers! Make Your Own Rocket! Experiment Inside! Praise for Dragons vs. Unicorns : "Proves that science and fun go together like molecules in a polymer."-- School Library Journal "It's a great introduction to the basics of Chemistry that is readily accessible to a variety of ages . . . . The way the everyday chemistry is blended in is done seamlessly, and has [me and my ten-year-old son] noticing how we are all doing a little bit of science every day." -- GeekMom.com Gr 2–5—The fourth adventure in the "Kate the Chemist" series follows the titular hero as she navigates chemistry experiments, rocket launches, school drama, and more. Kate befriends a new member of the science club, Tala, and the two bond over a shared passion for science. But their burgeoning friendship causes Birdie, Kate's art-loving best friend, to feel isolated. She immediately distances herself from the pair, much to Kate's confusion and dismay. Meanwhile, the science club plans a rocket launch, an experiment suggested by Tala. There is one major problem: The launch falls on the exact same day and time as Kate's younger brother's birthday party. Through clever thinking and no shortage of STEM, Kate works out a way to attend both events, mend friendships, create new ones, and support her brother. Kate and her family are white, Tala and her family are Filipino, and their classmates are racially diverse. Instructions for a double balloon rocket experiment, including materials, protocol, and an explanation of the science behind the experiment, follow the story. VERDICT With numerous scientific concepts and terms scattered throughout, this pleasant title will appeal to fans of other STEM-infused series like Emily Calandrelli's "Ada Lace" and Asia Citro's "Zoey and Sassafras." An additional purchase for middle grade collections.—Olivia Gorecke, Cape May Cty. Lib., Ocean View, NJ Dr. Kate Biberdorf, also known as Kate the Chemist by her fans, is a science professor at UT-Austin by day and a science superhero by night (well, she does that by day, too). Kate travels the country building a STEM army of kids who love science as much as she does. You can often find her breathing fire or making slime--always in her lab coat and goggles. You can visit Kate on Instagram and Facebook @KatetheChemist, on Twitter @K8theChemist, and online at KatetheChemist.com. Chapter One A Black Hole I HAD TO KNOW what was inside the mystery box. Outside the science lab a snowblower roared. The room filled with chatter. Everyone was whispering about the box sitting on a table in the middle of the room. “I’m going to peek,” I whispered. Birdie Bhatt, my very best friend, jumped in front of me. “Don’t even think about it, Kate.” “But . . . but . . .” The box was wrapped in shiny tinfoil like a present. Only instead of abow, there was a giant red question mark made of con-struction paper. “Ms. Daly is right there.” Birdie pointed to our after-school science club advisor, who stood at the doorway, welcoming kids. I bit my fingernails. “I hate waiting.” “I know.” Birdie smiled and her brown eyes crinkled. She knew me soooo well. “Here.” Birdie dug into her flower-covered backpack and handed me a caramel apple granola bar. It was my favorite. “Here.” I unzipped a front compartment in mybackpack and yanked out a bag of trail mix with M&M’s and sunflower seeds. “I love those,” said Birdie in a hushed voice. “I know.” Now it was my turn to smile. That’s when Ms. Daly marched to the front of the class. She glanced up at the clock. Three fifteen exactly. She’s a retired air force flight engineer and always starts on time. She says you can’t keep fighter pilots waiting. Of course, we weren’t pilots. We were students at Rosalind Franklin Elementary School. Which is named for Dr. Rosalind Franklin, one of the greatest chemists of all time. Science is ex