The students of class 201 are locked out of their classroom. Professor Adams's car has broken down and they can't unlock the door without his nose print. Join the students of Science Academy as they learn how forces work and help Professor Adams get her car to move. Simple sentences and easy-to-understand examples make learning about forces understandable and fun.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $20. ThriftBooks.com. Read more. Spend less.