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Penny and cup gameEdit

Student worthinessEdit

Tried and trusted.

Primary biological content area coveredEdit

The human body; senses, more specifically the sense of sight.

MaterialsEdit

Materials required for teacher's use:

  • copy of the lesson
  • A pen or pencil to make notes

Materials required for each student group:

  • pennies
  • short glass cup
  • water
  • paper towels

Materials required for each individual student:

  • A pen or pencil
  • handout

HandoutsEdit

Untitled
Penny and cup graph
Penny
Penny Drop

Description of activityEdit

To discover if one eye is better than two. Students will test their sense of sight with both monocular and binocular vision. Students will drop a penny and see if it lands in the cup of water. They will have to rely on their sense of sight for this activity.

Lesson planEdit

The goal: To test whether two eyes are better than one!

  • Fill glass cups or jars half way with water before students begin. The water is to ensure that the cup/jar does not break.
  • Have students pair up.
  • Have students hypothesize about which eye(s) they think will give them the best results (most pennies in the cup). Students should record this on their handouts.
  • Students will take about 12 pennies each.
  • Partners should sit across from each other and take turns testing and recording their results.
  • One student picks up a penny, and with both eyes open, moves his or her arm over the cup and drops it; trying to make the penny fall into the glass. The arm should be at head-level making a 45 degree angle.
  • Partners should take turns so that each one gets a turn doing the previous step.
  • Next, one student should pick up a penny, and with one eye closed, move their arm over the cup and drop it; trying to get the penny into the glass.
  • The partner should repeat this step.
  • Lastly, one student should pick up a penny, and with the other eye closed, move their arm over the cup and drop it; trying to get the penny into the glass.
  • The partner should repeat this step.
  • Now, the students can compare their results to their predictions prior to experimenting.
  • Which way is better? Which is your dominant eye? Answer questions on the handout.

Things to keep in mindEdit

  • Glass breakage; make sure that there is water in the cups/jars.
  • Be careful with the pennies; we don't want anyone to get a penny in the eye!
  • It might be too easy for students to answer and their minds could begin to wander.
  • Clearly explain how vision is part of the body that is often taken for granted.
  • Explain how science is intwined with the human body and relate the human brain to visibility.
  • Have students drop the pennies from different heights and write down if they think height is a factor.
  • Might not be enough work for the students.
  • Bring different objects besides pennies like feathers, paper clips, or erasers.

Science connectionsEdit

  • Students will be connecting their knowledge of the senses to their investigations about binocular vision and depth perception.
  • Students will make the connection that they need both eyes to be able to see in 3D.
  • Students will understand how each eye presents a different view because of its connection to the brain.
  • Students will realize what an important role vision plays in their daily life.

Math connectionsEdit

  • Fractions! How many pennies out of all that you were given did you get in the cup? Write it as a fraction.
  • What percentage of pennies did you get into the cup?
  • Students can make graphs to compare the results with each eye and both eyes.
  • Proportions and probability can also be addressed and discussed with students.

Literature connectionEdit

Sense of Sight by Carey Molter

Sight by Kay Woodward

Connections to educational standardsEdit

  • S3-4:2-S3-4:2- Identifying simple patterns of evidence used to develop a prediction and propose an explanation
  • S3-4:4- Conducting experiments according to the VT Standards Expectations under this category
  • S3-4:6- Students are able to analyze data
  • S3-4:7- Students are able to explain data

Next stepsEdit

Would this experiment be different if you used colored cups instead of clear ones? Does the clarity of the cup make this experiment easier or harder? Try closing your eyes and having your partner tell you where to drop your penny. Try this with one eye and then two eyes. Which is easier? Do you find yourself missing the cup more often?

Citations and linksEdit

This Penny and Cup idea came from the PBS ZOOM website. You can find this idea at http://pbskids.org/zoom/activities/sci/pennycupgame.html

Educational Standards for this experiment can be found on the Vermont Educational Standards website http://education.vermont.gov/new/html/pgm_curriculum/science/gle.html

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