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Narrow it Down: Numbers
Source Institutions
In this activity, learners will ask yes-no questions to identify a secret number (similar to Twenty Questions). Combine logic and numbers in this game for all ages.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-030.jpg?itok=NaN9W1rq)
Find the Best Way to Clean Oil off Bird Feathers
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In this experiment, learners examine the way oil affects bird feathers and test different cleanup methods to find out which works best.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-695.gif?itok=zMBIDtCA)
Mass of the Earth
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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.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-756.jpg?itok=L35ILDbB)
Restriction Enzyme Digestion: How does it work? Why is it useful?
Source Institutions
In this activity related to plant biotechnology, learners use restriction enzymes to cut up DNA from a virus called Bacteriophage λ, a process known as restriction digestion.
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Handy Measuring Ratio
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In this activity, learners use their hands as tools for indirect measurement.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-742.jpg?itok=VN50_kyS)
Laser Jello
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In this activity, learners use gelatin as a lens to investigate the properties of laser light.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-859.jpg?itok=p-HNUdOh)
Cartesian Diver
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In this quick activity (page 1 of the PDF under SciGirls Activity: California Fish), learners will build a simple Cartesian Diver in an empty 2-liter bottle.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-024.png?itok=aT0mmvtv)
If Anyone Can, Icon
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In this activity, learners create their own icons for a forecast-at-a-glance poster for their classroom/learning space.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-908.jpg?itok=QGNZyXiO)
Outdoor Explorers
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In this activity, young learners go on a walk with caregivers and use their senses to observe nature with the help of scavenger hunt sheet.
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Scientific Measurement Exercise
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Learners measure irregularly shaped bones using a variety of measurement methods and tools. Then, they measure again using standard conventions and metric tape measures.
Making Rivers
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In this outdoor water activity, learners explore how to change the direction of water flow. Learners make puddles in dirt or use existing puddles and sticks to make water flow.
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Moon Watch Flip Book!
Source Institutions
In this activity, learners observe the moon each night for a month and draw their observations in a Moon Watch Log.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-707.jpg?itok=AZbdx-Ur)
Spinning Cylinder: Make a triangle appear on a spinning wheel
Source Institutions
Spin a short piece of PVC pipe that's been marked up, and watch a triangle appear. Enjoy this optical illusion from the Exploratorium's Science Snack series.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-272.jpg?itok=0ranvsbf)
Conservation Island
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In this lesson, learners will understand the concepts behind endangered and extinct animals and develop their own conservation plan to save three endangered species.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-061.jpg?itok=cOsfo695)
Engineering Ups and Downs
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In this activity, learners explore the engineering and principles behind working elevators.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-656.jpg?itok=NZbHxDuz)
Mission: Control!
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In this activity and game, learners will train to improve balance and spatial awareness by performing throwing and catching techniques on one foot.
Energy Audit
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In this lesson, learners will practice graphing and statistically analyzing data.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-915.jpg?itok=zw7gB5l0)
Speedy Shelter
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In this design challenge activity, learners invent an emergency shelter that can fit a person and is sturdy and quick to build.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-642.jpg?itok=YzjZSwZa)
Penny Battery
Source Institutions
In this activity, learners light an LED with five cents. Learners use two different metals and some sour, salty water to create a cheap battery.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-781.jpg?itok=rpHfOfhs)
Yeast DNA Extraction
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This laboratory exercise is designed to show learners how DNA can easily be extracted from yeast using simple materials.