%% This is a multi-book review: SEE also the title Simple Machines. %% Gr. 35. Creative science-minded youngsters will enjoy the latest entries in the Design and Create series. Each book contains 12 projects nicely presented in a colorful double-page-spread layout. Each project includes a list of materials, numbered step-by-step instructions with photos, and a captioned picture showing a real-life application for the principles demonstrated by the project. Many of the projects are also accompanied by a Now Try This section, which suggests a project variation that is usually more challenging than the original. Water Projects includes instructions for making a drink machine, a waterwheel, and a dredger, as well as many different types of boats. A cookie crusher and bubble machine are among the projects in Simple Machines Although the materials needed for the projects are not always commonly found in the home, they will be easy to locate elsewhere. The books will inspire students at science fair time and also provide teachers with good resources for classroom experiments. (Reviewed February 1, 1998)

Each book uses a variety of hands-on projects, requiring vastly different skills and materials, to introduce concepts. For example, the activities in 'Houses' include making an igloo out of sugar cubes, building a child-sized chair with old newspapers, and experimenting with electricity (with appropriate cautions). Some projects require adult assistance and/or more explanation than is included in the very brief captions and color photos. Bib., glos., ind.

Gr 4-6--Twelve practical projects, each presented on a double-page spread, illustrate the uses of water. An inflatable boat, a shaduf (an Egyptian water lifter), a waterclock, and a ferryboat are among the models included. All are made from commonly found materials such as balloons, two-liter bottles, tape, wood, and plasticine. Because small pieces need to be cut out, hammered, and nailed, and accurate measures are required, these projects are best suited to intermediate-grade children. All of the items are working models that apply simple, mechanical principles, such as the lever, although they are not stated in the text. The full-color photos enhance the step-by-step instructions. Additional photos of the actual objects and their locales are included. Some of the projects are also suitable for use in dioramas. The book presents material not readily found in any other single source. The short list for further reading is current and calculated to broaden readers' understanding of water, boats, and hydro projects. Additional notes are appended.--Kathryn Kosiorek, Cuyahoga County Public Library, Brooklyn, OH