has been the same...THEY LOVE IT!. Weve expanded our line to include this 300 in one lab kit, and the 500 in one lab kit. This lab includes an incredible 165 page comprehensive manual covering the construction of EACH project and the theory behind it. Each component can be assembled onto the breadboard without soldering because they get connected to spring terminals. Plenty of pre-cut insulated wire. All of the provided projects are powered by low voltage batteries, so there's none of the danger associated with using standard AC voltage. Detailed content within the instruction manual includes: -Surprise and Fun -Back to the Basics -Electronic "Building Blocks" -Putting Electronics to Work -Radio Circuits -Sonic Zoo and Sound Factory -Ele...  (less)