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National Standards for Grades 7-10


Students explore wavelength, frequency and amplitude while immersed in hands-on experimentation. As students build their own old fashioned Crystal Radios, they explore the effects of coil design, building materials, and antennae number and length, on maximizing tuning and signal strength. Then students upgrade their crystal radio into a transistor radio. Ideal for hands on learners, as intuition plays a role in developing antenna design solutions, iterative testing, and making modifications for improvements. Great for introducing guided inquiry-based learning. Includes a complete instructor’s manual with reproducible stepwise student protocols. Allow three 45-minute lab periods for building. Class kit makes six radios and is designed for 24 students working in groups of four.

Build a Crystal Radio with an Amplifier Class Kit

SKU: 15-230
    • Instructor’s Manual with Reproducible Student Sheets
    • Mounting board
    • Copper Wire
    • Cardboard Tubes
    • Magnet Wire
    • Breadboard
    • Steel Wire
    • Masking tape
    • Germanium Diode
    • Resistor Set
    • Transistor
    • Fahnestock Clips
    • Screwdriver
    • Ceramic Earphone
    • 9V battery
    • 9V Battery Snap Connector
    • Capacitor Set
    • Wire Strippers
    • Ground Wire
    • Sandpaper
    • Wood Screws
    • Aluminum Foil
    • Cardstock
  • Class Kit

    Box 1 Sh. wt. 7lbs, DIM 13" x 12" x 5"

    Box 2 Sh. 7lbs, DIM 19" x 12" x 5"


    Single Kit 15-225

    Sh. 4lbs, DIM 13" x 12" x 5"

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