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Describing Oak Leaves
Source Institutions
Learners work in teams to investigate how scientists use physical characteristics to classify living things.
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Masses & Springs
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In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping.
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Wheat Evolution: Dough Washing
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In this activity (Page 22 of PDF), learners investigate the evolution of wheat by washing different types of dough with water and comparing the results.
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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.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-793.gif?itok=xcMDzA7_)
The Ballistic Pendulum
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In this physics crime lab or demonstration, learners pretend they are criminologists and must find the "muzzle velocity" (speed of the bullet as it leaves the gun) of a gun used to commit a crime.
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Our Sense of Sight: How We Perceive Movement, Depth and Illusions
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In this activity, learners investigate visual perception as well as plan and conduct their own experiments.
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Wheat Evolution: Dough Rising and Baking
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In this activity (Page 25 of PDF), learners investigate the evolution of wheat by creating dough from different flours, observing the samples of dough as they rise, and then baking the dough.
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On the Microbe Trail: An Introduction to Bacteria and Aseptic Technique
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In this series of exercises, learners predict the conditions necessary for bacterial growth, test their predictions and at the same time practice the aseptic techniques and safety procedures needed wh
What Does Life Need to Live?
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In this astrobiology activity (on page 11 of the PDF), learners consider what organisms need in order to live (water, nutrients, and energy).
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Cooling Off
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In this activity, learners are introduced to challenges of maintaining temperatures while living in space.
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Translating an Alien Message
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In this activity, learners work together to interpret an "alien message." The group pretends that this is the only message from an imaginary civilization, so there is no "key" and thus no "correct" wa
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Self-Portrait Silhouettes: Activity 1
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In this activity, learners make a photographic image--without a camera!
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Spinning Illusions
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In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.
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Gymnast
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In this physics activity, learners build a toy with a figure that spins around like a gymnast on the high bar.
How Do Antacids Work?
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You just ate a big meal and feel heartburn coming on. You take an antacid and feel better. Why? Heartburn is caused by stomach juice (an acid) burning the esophagus.
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Human Interface Design: The Chocolate Factory
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In this activity about human interface design issues, learners help the Oompa-Loompas of a great chocolate factory solve different problems.
Hazardous Chemicals in Your Neighborhood
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In this environmental science lesson, learners will examine hazardous chemicals and their effects on human health and the environment.
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Thrown For A Curve: Pitch Like A Big Leaguer
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You may have tried to throw a curveball or a slider, or even a screwball, with an ordinary baseball and found it difficult to do.
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Leaning Tower of Pasta
Learners build structures from spaghetti and marshmallows to determine which structures are able to handle the greatest load.
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Motor Learning
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In this activity (26th on the page), learners construct an easy-to-build device and test motor learning.