Search Results
Showing results 1301 to 1320 of 2375
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-977.gif?itok=QxpE4-oP)
Stargazing
Source Institutions
In this nighttime, outdoor activity, learners keep a record of what they see in the sky by drawing constellations, the Moon, and making note of the weather and conditions each day.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-319.png?itok=42NB-FEa)
Wheat Evolution: Dough Washing
Source Institutions
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.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-122.gif?itok=4sTtQDK5)
Updrafts in Action
Source Institutions
In this weather activity/demonstration, learners watch as a ping pong ball is suspended in a stream of air supplied by a hair dryer.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-331.jpg?itok=xrvKT6Mb)
Investigating the Line
Source Institutions
In the related activity called "Colors Collide or Combine," learners are intrigued by the apparent "line" that forms where colors from M&M coatings meet but do not mix.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-644.jpg?itok=nExLX9hb)
Biochemistry Happens Inside of You!
Source Institutions
In this four-part activity, learners explore how the body works and the chemistry that happens inside living things.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-594.png?itok=BcCpVt54)
Soapy Boat
Source Institutions
Learners discover that soap can be used to power a boat. Learners make a simple, flat boat model, put it in water, and then add a drop of detergent at the back of the boat.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-356.gif?itok=o1d10lQO)
Our Sense of Sight: How We Perceive Movement, Depth and Illusions
Source Institutions
In this activity, learners investigate visual perception as well as plan and conduct their own experiments.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-136.jpg?itok=IZPSydOx)
We all Scream for Ice Cream
Source Institutions
In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-325.jpg?itok=bb2VHsJc)
Wheat Evolution: Dough Rising and Baking
Source Institutions
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.
What Does Life Need to Live?
Source Institutions
In this astrobiology activity (on page 11 of the PDF), learners consider what organisms need in order to live (water, nutrients, and energy).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-219.png?itok=0UM0dkaf)
Translating an Alien Message
Source Institutions
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
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-295.jpg?itok=EUCBF12d)
Mystery Writing: Write and develop a secret message
Source Institutions
Learners write an invisible message using lemon juice on a piece of paper. They then develop the message by soaking the paper in a dilute iodine solution.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-615.jpg?itok=U8ER1iZ2)
Polishing Pennies
Source Institutions
In this experiment, learners try different liquids to see which ones clean pennies best. Liquids to try include water, lemon juice, cola, vinegar, and dishwashing detergent.
No bones about it!
Source Institutions
This is an activity (located on page 3 of the PDF) about the mixture of materials in bone and how they affect its strength.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-494.png?itok=mofTlOIN)
Pollen Tracks
Source Institutions
In this activity (on pages 30-36), learners simulate a dig for ancient pollen, to experience how paleobotanists study fossilized pollen in rocks to learn about early geological and climatological even
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-687.jpg?itok=kWflrAgh)
Spinning Illusions
Source Institutions
In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-557.gif?itok=gQRC6_sv)
TerrAqua Investigation Column: What is the Land-Water Connection?
Source Institutions
In this investigation, learners plant seeds in a 2-liter bottle filled with soil that is connected to a water source below. Over the next few weeks, learners observe how the plants grow.
Building a Community From the Ground Up
Source Institutions
In this activity, a group of learners work collaboratively to design and construct a paper model showing the evolution of an environment through multiple stages, from prehistory through the modern cit
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-480.png?itok=P3TEy8kb)
Traveling Tapeworm
Source Institutions
In this "gross" activity (on pages 34-46), learners make a life-size model of a human digestive tract, and follow the life of a beef tapeworm as it makes its way through.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-750.jpg?itok=0k_dEQga)
Shapes and Angles
Source Institutions
In this activity (page 7 of PDF), learners will identify the general two-dimensional geometric shape of the uppermost cross section of an impact crater.