Ed Sobey

A Field Guide to Household Technology

The Motorboat Book

Build Your Own Robot Science Fair Projects

Robotics Engineering

Electrical Engineering

The Arrival of the Electric Car

Science Brain Builders Classroom Collection

Science Brain Builders Pack a Of 4

Science Brain Builders

Field Guide to Automotive Technology

Way Kitchens Work

Unscrewed

Field Guide to Roadside Technology

Field Guide to Office Technology

Wack Water Fun with Science

1999

Inventing Toys

Build Your Own Robot Science Fair Project

Kids Invent : Ready, Set, Go!

Radio-Controlled Car Experiments

Robot Experiments

Electric Motor Experiments

Solar Cell and Renewal Energy Experiments

Solar Cell and Renewable Energy Experiments

Car Models That Zoom