Machines - Make It Work! Author:Wendy Baker, Andrew Haslam Machines is a unique blend of imaginative activities, experiments and science facts that helps develop scientific thought. The vast "Make it Work" series teaches scientific principles through the hands-on process of making science work. It's an invaluable science series for school and home, mixing hobby and science in an effort to show k... more »ids how to observe, collate information, and reach conclusions. The easy-to-follow instructions and helpful color photos make it a great resource for children ages 8-11. School Library Journal says the Make it Work! Science books are "A Great Series."« less