Zack McGee has his arm in a sling. He crashed his bike. All because his four-inch-tall alien houseguest, Amp, stole his brakes! Now Zack´s stuck at home with his annoying little brother, Taylor. And Taylor´s eager to figure out exactly what Zack has been hiding in his pocket.áLike every book in the Alien in My Pocket series, On Impact! mixes Common Core-aligned science and safe, hands-on experiments with hilarious stories that young readers will love.
