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Copper Caper
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In this activity, learners conduct an oxidation experiment that turns old pennies bright and shiny. Learners soak 20 dull, dirty pennies in a bowl of salt and vinegar for five minutes. They rinse half the pennies with water, then compare the rinsed pennies to the unrinsed after all pennies sit and dry for about an hour. Learners also observe what happens when they submerge a screw and nail in the liquid compared to a nail only half-way submerged.

Subject:
Matter
Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Ellen Klages
Jason Gorski
Linda Shore
Pat Murphy
Date Added:
12/07/1997
Illuminations on Rates of Reactions
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In this activity, learners investigate the speed of chemical reactions with light sticks. Learners discover that reactions can be sped up or slowed down due to temperature changes.

Subject:
Matter
Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Eric Muller
Date Added:
11/07/2003
Macro-Microarray
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In this activity, learners explore the "nuts and bolts" of gene chips. Learners construct a simple model of a DNA microarray (also known as gene chips) and learn how microarrays can be used to identify and treat disease--including cancer. This resource includes references and an explanation of microarrays.

Subject:
Living Systems and Processes
Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Julie Yu
Date Added:
11/07/2007
Make a "Mummy"
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The Ancient Egyptians used a naturally-occurring salt from the banks of the Nile River, called natron, to mummify their dead. Natron is made up primarily of sodium carbonate (a very efficient, but relatively expensive, dehydrating material), with about 17% sodium bicarbonate (baking soda). This activity explains how to create your own fish mummy using common baking soda!

Subject:
Matter
Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Karen Kalamuck
Date Added:
12/07/2000
Plot the Dot
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CC BY-NC-SA
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In this activity, learners work in groups to determine the mass and volume of four samples: glass marbles, steel washers or nuts, pieces of pine wood, and pieces of PVC pipe. Learners then plot the data points on a large class graph of mass vs. volume to discover that data points for a particular material form a straight line, the slope of which gives the density of the material.

Subject:
Force/Motion/Energy
Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Don Rathjen
Date Added:
11/07/2009
A Simple Escapement Mechanism
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In this activity, learners build a simple mechanism that regulates the "escape" of energy released by a falling weight by portioning it into discrete amounts. Escapements are found in mechanical clocks, such as those driven by a pendulum or a spring. Learners will build the wrapping form of escapement said to be used in a fifteenth-century German clock.

Subject:
Force/Motion/Energy
Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Don Rathjen
Date Added:
11/07/2007
VT PEERS: Mountains Have SO MUCH Potential!
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CC BY
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Lesson Length: 1-2 hoursGrade Level: 6-8Students learn about potential and kinetic energy as it relates to mountain roads. The activities are grounded in engineering design thinking as it relates to engineered roads and road repair. Also included is a challenge activity with renewable energy Snap Circuit simulations.This material is based upon work supported by the National Science Foundation under Grant No. 1657263. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

Subject:
CTE
Career Connections
Cross-Curricular
Force/Motion/Energy
STEM/STEAM
Science
Scientific and Engineering Practices
Technology Education
Trade and Industrial
Material Type:
Activity/Lab
Interactive
Lesson
Lesson Plan
Author:
VT PEERS
Date Added:
10/22/2020
tiny Pants Photo Challenge
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CC BY-NC-SA
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In this activity, learners use basic measurements of the Earth and pieces of rock and iron to estimate the mass of the Earth. Learners will calculate mass, volume, and density, convert units, and employ the water displacement method. To calculate an even more accurate estimate of the mass of the Earth, this resource includes optional instructions on how to measure the iron core mass.

Subject:
Force/Motion/Energy
Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Eric Muller
Date Added:
11/07/2010