How Long Does It Take To Remember Something?

By thinknut.blogspot.com
How Long Does It Take To Remember Something?

 

Objective:

In this experiment, students will discover the average time it takes for a person to remember something completely.

Research Questions:

In this experiment, we will give each test subject a passage to memorize to the best of their ability, in one sitting. Some people say that a person has to recite something 20 times for it to be permanently stored in their brain. But is this true?

Materials:

• A chosen passage of about 50 words (you can create one yourself or pick a pre-written passage, but remember not to choose a popular passage that some people may have already memorized)
• Test subjects
• A watch/timer
• Pen and paper for notes

Experimental Procedure:

1. Hand out the chosen word passage to your test subject and ask them to remember it to the best of their ability. Instruct them to tell you when they are comfortable with reciting the passage. Begin timing.
2. When your test subject is ready to recite it, record the time.
3. As your subject recites the passage, take note of any pauses or mistakes in your notes. If your test subject makes excessive mistakes, give them more time to study the passage, record the additional time, and then have them recite again.
4. Do steps 1-3 for all your test subjects.
5. Calculate the average time it took for all your test subjects to recite the passage with 100% accuracy.
6. Evaluate your results.

Terms/Concepts: Memory; Sensory memory; Short term memory; Long term memory

 

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By thinknut.blogspot.com

How to build a Solar Bottle Bulb ???

          Light up dark areas in your home during daytime using this green and sustainable concept. Recycle used clear plastic soda bottles, add water+bleach, then install. After installation this solar light bulb can provide approximately 55 watts of light from the sun! T

 

he communities who benefit from this idea live in areas where the houses hardly have windows and live in darkness even during daytime. Their solution up until this innovation was to turn on the light bulb and use electricity.

You Will Need :

• PET soda bottle
• Galvanized Iron (GI) sheet
• Rubber sealant
• Bleach
• Filtered Water

Process :

Cut approximately 9 x 10 inches of GI sheet (corrugated or flat). 

At the center of the GI sheet, draw 2 circles.

And Cut the internal circle.

Cut the 1 cm difference radially, making strips and bend upwards, perpendicular to the GI sheet.

Using sandpaper, scratch the surface around the upper third portion of the soda bottle where the GI sheet will be placed, to allow the rubber sealant to stick better.

Insert the bottle into the GI sheet until the upper third.

Apply rubber sealant on the strips above and around the area below. Wait to dry.

Fill the soda bottle with filtered water and ~10 mL (2 capfuls) of bleach.

Cover with its original cap.

The solar bottle bulb is now ready for installation !

Installation :

Cut a hole on the roof, similar to the bottle circumference.

Place the solar bottle bulb into the hole. Make sure it is firmly in place.

Drill 4 holes on each side of the solar bottle bulb using Bosch lithium-ion cordless drill and put in the rivets.

Apply rubber sealant around all edges of the GI sheet of the solar bottle bulb to avoid leakage. Make sure to cover the rivets.

Place a protective plastic tube on the bottle cap and apply rubber sealant.

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By thinknut.blogspot.com

How to Make a Door Alarm ???

It can be very annoying when your siblings enter your bedroom without permission. If they keep on going inside, despite your threats and pleas, make a door alarm!

You Will Need :

• Buzzer
• Battery 
• Wires
• Clothes Pin

Process :

Place the battery and buzzer on the wood as shown in the picture. Tape them down with electrical tape.

Wrap the ends of the clothes pin with bare, non-insulated wire.

Connect one of the free ends of wire around the clothes pin to a wire coming from the battery.

Connect the wire around the clothes pin to the buzzer.

Connect the remaining free wire from the battery to the buzzer.

Test the switch by opening and closing the clothes pin. When the clothes pin is closed, the buzzer should turn on. If not, check the wiring again.

Place a piece of cardboard or other insulative material in the clothes pin to separate the wires so that the buzzer does not go off anymore when it closes.

Glue the clothes pin to the wood, as seen in the picture.

Attach the string to the piece of cardboard between the clothes pin things.

Attach the other end of the string to your door. Place the alarm so that the string is taut between the alarm and the door. When the door opens, the string should pull the cardboard out, setting off the alarm.

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