Kids use simple machines every day without realizing it. Teeth are wedges and so are knives, forks, and thumbtacks. Many toys such as slides, which are inclined planes, and seesaws, which are levers, are also simple machines. Two appealing kids and their comical cat introduce levers, wheels, pulleys, inclined planes, and more, and explain how they work. This lively introduction to physics will get kids excited about how simple machines simplify our lives.

It can be surprising which objects float and which don't. An apple floats, but a ball of aluminum foil does not. But if that same ball of foil is shaped into a boat, it floats! Why? And how is it possible that a huge ship made of steel floats? Answering these questions about density and flotation is David A. Adler's clear, concise text, paired with Anna Raff's delightful illustrations. Activities that demonstrate the properties of flotation are included.

It can be surprising which objects float and which don't. An apple floats, but a ball of aluminum foil does not. But if that same ball of foil is shaped into a boat, it floats! Why? And how is it possible that a huge ship made of steel floats? Answering these questions about density and flotation is David A. Adler's clear, concise text, paired with Anna Raff's delightful illustrations. Activities that demonstrate the properties of flotation are included.

Cam Jansen and her best friend, Eric, are excited about their classÕs 100th day of school party! To celebrate, theyÕre having snacks that start with the letter PÃ'pretzels, popcorn, pineapple juice, and everybodyÕs favorite, pizza. But when the pizza disappears from the kitchen, itÕs up to Cam and her photographic memory to Ã'clickÓ and solve this delicious mystery!

Forensic psychologists at Middlesex University, UK, introduce the diversity of the field. Focusing on developments since the 2004 edition and including updated chapter headings, international contributors to 26 chapters treat the distinction between correctional and forensic psychology, issues relating to applications of forensic psychology in various jurisdictions, the ethics of practice, training and regulation of psychologists, police interviewing, the influence of defendant gender on courtroom decisions, and psychological interventions as treatment or deterrent, and prevention. New chapters provide insights on the nature of, and responses to, terrorism and genocide. Distributed in the US by ISBS. Annotation ©2010 Book News, Inc., Portland, OR (booknews.com)

Looking at the table with all the food laid out for the big event, Cam notices that the pizzas have suddenly gone missing and so begins to search the clues that were left behind in order to track down the thief and their tasty lunch before its too late--and all the evidence eaten!