- discuss the use and purpose of Morse Code.
- build their own switch.
- ask and answer questions through Morse Code.
2.1.1 Manipulate an object to gain additional information about it.
2.1.3 Describe, both in writing and verbally, objects as accurately as possible and compare observations with those of other people.
2.1.5 Demonstrate the ability to work with a team but still reach and communicate one's own conclusions about findings.
2.1.6 Use tools to investigate, observe, measure, design, and build things.
2.2.4 Assemble constructions using things such as interlocking blocks and erector sets.
2.2.5 Draw pictures and write brief descriptions that correctly portray key features of an object.
3.1.2 Participate in different types of guided scientific investigations, such as observing objects and events and collecting specimens of analysis.
3.1.3 Keep and report records of investigations and observations using tools, such as journals, charts, graphs, and computers.
3.1.4 Discuss the results of investigations and consider the explanations of others.
3.1.5 Demonstrate the ability to work cooperatively while respecting the ideas of others and communicating one's own conclusions about findings.
3.1.6 Give examples of how tools have affected the way we live.
3.2.3 Keep a notebook that describes observations and is understandable weeks or months later.
3.2.5 Write descriptions of investigations, using observations and other evidence as support of explanations.
4.1.7 Discuss and give examples of how technology has improved the lives of many people.
4.2.3 Make simple and safe electrical connections with various plugs, sockets, and terminals.
4.2.5 Write descriptions of investigations, using observations and other evidence as support of explanations.
5.2.4 Keep a notebook that describes observations and is understandable weeks or months later.
- 1 battery in holder
- 1 breadboard
- 1 light bulb
- 2 three foot wires
- push pins 1 toothpick
- 1 rubber band
- 2 1-foot wires with washer at one end
- 1 book
- Discuss Morse Code:
Signaling is a way to communicate where speaking won't work. Smoke signals, football signals and telemetry signals to spaceships are some examples. Signaling is also used to move information around inside of circuits.
Build a Switch:
- Take a wire that has no washer on one end and tightly wrap the bare wire around the end of one craft stick. The wires should be touching each other. Use the other wire for the other craft stick.
- Put the 2 sticks on top of each other with the wires touching. Wrap a rubber band tightly around the other end.
- Put the toothpick between the craft sticks near the rubber band. The wires should now touch when you push down on the switch and open up when you stop pushing.
- Now that you have your switch, go on to the next page to finish this experiment. You will need to work with another team.
- Build the simple switched circuit using long wires so that your light can be placed a long way from the battery on the other team's breadboard. Keep your switch close to your battery.
- Put a book upright between the two breadboards so that you cannot see the light and switch the other team.
- Write a one word question and translate it into Morse Code.
- Use Morse Code to ask the other team your question. Turn your light on for a "long" time for a dash and a "short" time for a dot. Use an extra-long flash of light to indicate that you are done.
- Now decode their answer. Write down the dots and dashes. Then translate them into letters.
- discuss the use and purpose of Morse Code?
- build their own switch?
- ask and answer questions through Morse Code?
