TY - BOOK ID - 149848615 TI - How do airplanes stay up? PY - 2019 SN - 1532162669 PB - Minneapolis, Minnesota : Pop, DB - UniCat KW - Airplanes KW - Aerodynamics KW - Flying-machines UR - https://www.unicat.be/uniCat?func=search&query=sysid:149848615 AB - "This book introduces readers to the science behind aviation. Students learn about the four forces of flight: gravity, lift, drag, and thrust. Vivid photographs and easy-to-read text aid comprehension for early readers. QR Codes in the book give readers access to book-specific resources to further their learning. Aligned to Common Core Standards and correlated to state standards." -- ER -