Crafty Detectives has all kinds of directions for making detective tools. In it you can learn to to make a hidden camera, a trick wallet, an undercover book, alarms and a lot more.
The marble telescope and the periscope are both devices to help you conduct secret surveillance. With a periscope you can see around corners or over walls or fences. With the marble telescope you can see through a keyhole. Really. Give them a try:
If you want to be a detective you need to gather your tools together and learn some useful detecting techniques. Collecting the right tools is important so that you are ready whenever a mystery comes along or you feel the need to do some investigating. The first thing you need is something to easily carry all of your stuff in. A backpack is perfect for this. Your hands are free and you can run at a moments notice. Check around your house and see if you can collect some of these important tools:
If you want to really challenge yourself try out the CIA Break the Code website. You can choose from several code games to see if you qualify to be an ace code maker and breaker.
In the bonus book The Mysterious Benedict Society, the kids use morse code. Morse code is a code in which dots and dashes are used to represent the letters of the alphabet. The dots and dashes can be transmitted over a telegraph or even by turning a light on and off and the right intervals. Try out The Benedict Society’s morse code matching game and then if you think you’re REALLY good try CSS Sam Operation Dit Dah. THAT one is hard. If any of you can do it, let me know. I’ll be impressed.