Build over 750 experiments with 80 parts Experiments include: sound activated switch, Lie detector, adjustable light controller, Am radio, rechargeable battery and many more! Parts included: Photo resistor, power amplifier, variable capacitor, Analog meter, solar Cell, computer interface, full color manuals No soldering - no tools - it's a snap! Snap Circuits parts require no tools and and click together to ensure solid electrical connections With the included software and pc-interface cable, your child can view waveforms and frequencies, just like an electronics engineer. How cool is that?! Our AWARD-WINNING product line of snap Circuits supports a vigorous STEM/ steam educational curriculum Learn by doing- designed for children ages 8 and over.