David Glover

Uses activities and projects to introduce how electricity and magnets work at home and in the everyday world.

Simple text and illustrations explain what cranes do and how they work.

Simple text and illustrations explain what bulldozers do and how they work.

"Someone is trying to steal a famous treasure from the museum of mysteries, and the reader must prevent the theft by using math to solve number puzzles involving number patterns, factors and primes, fractions, place values, and more"--Provided by publisher.

Uses activities and projects to introduce how electricity and magnets work at home and in the everyday world.

"Why has the base crew on the Planet of Puzzles disappeared? Your mission is to rescue the crew, using your knowledge of data handling, including tables, charts, graphs, averages, and probability"--

Introduces the principles of springs as simple machines, using examples from everyday life.

Experiments and other activities introduce building, how materials are used and joined together, and what gives structure its strength.