Science Experiment Kit - Electronics. In this increasingly digital world, it is more and more important for children to have a basic understanding of electricity and electronics. With the Electronics Experiment Kit, you can get a well-rounded introduction to electronic circuits and the most important electronic components found in today's digital devices! Assemble 21 electric circuits on the custom-designed plastic circuit board, including a moisture sensor, conductivity tester, polygraph, alarm systems, door alarm, flip-flop circuit, timed switch, timer, flashing lights, battery tester, touch sensor, and temperature sensor. Become familiar with essential electronic components, including conducting connectors, resistors, LEDs (light-emitting diodes), capacitors, transistors, switches, and power sources. Learn about conductors, insulators, and the flow of electrons! Understand abstract scientific terms like voltage, current, and resistance. Learn how to read circuit diagrams and circuit symbols. 48-page manual included. Requires one (1) 9 Volt battery (not included). For ages 8 and older. Materials: Plastic, Metal, Wire. Dimensions: 13.1 L x 8.9 W x 2.6 H - Packaged; 1 lb Features Learn about conductors, insulators, and the flow of electrons Assemble 20 electric circuits Learn how to read circuit diagrams and circuit symbols.