Search Results
Showing results 81 to 100 of 247
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-716.jpg?itok=1FNr5ffs)
Probability: Chances Are
Source Institutions
In this math lesson, learners identify the likelihood of an event by using a walk-on probability scale.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-480.jpg?itok=lnv53av5)
Eyepatch Challenge
Source Institutions
In this activity, learners construct an indoors obstacle course and discover how using an eye patch can help them complete the course in the dark.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-738.jpg?itok=VmYyAekW)
Salting Out
Source Institutions
In this activity, learners create a mixture of water, alcohol and permanent marker ink, and then add salt to form a colored alcohol layer on top of a colorless water layer.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-188.jpg?itok=Tu1DyZSc)
Swinging Yo-Yo
Source Institutions
Learners build a pendulum from a yo-yo, and then design their own experiment to determine what affects the pendulum's period of swing.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-927.jpg?itok=i6vJiVNl)
On Target
Source Institutions
In this design challenge activity, learners modify a cup so it can carry a marble down a zip line and also drop it onto a target.
Tropical Belt
Source Institutions
This lesson familiarizes learners with the term "tropical belt." First, learners locate the equator, Tropic of Cancer and Tropic of Capricorn on a map and trace these lines with a crayon.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-847.jpg?itok=TNNrcuIt)
Harvesting Chemicals from a Battery
Source Institutions
In this activity, learners take apart a used zinc-carbon dry cell battery.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-057.jpg?itok=ILj_IjJ9)
Getting Your Bearings
Source Institutions
In this activity, learners explore the concept of friction and how ball bearings reduce friction.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-648.gif?itok=kReBe4Yg)
Macro-Microarray
Source Institutions
In this activity, learners explore the "nuts and bolts" of gene chips.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-856.png?itok=-FueTzlS)
Harmless Holder
Source Institutions
Have you noticed the plastic rings that are used to hold six-packs of soda? Those rings are great for carrying cans, but they're real trouble when they become trash that animals can get tangled in.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-995.png?itok=rkvt-Nt1)
Avogadro's Bubbly Adventure
Source Institutions
In this activity on page 7 of the PDF, learners investigate the solubility of gas in water at different temperatures. This experiment will help learners determine if temperature affects solubility.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-954.jpg?itok=F05GILkV)
Inside Out
Source Institutions
Learners draw and cut out shapes of organs from construction paper. Then they attach these organs to the body of one learner to make a life-sized map of all the internal organs.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-049.png?itok=asLyEx3A)
Bee Builders
Source Institutions
In this activity, learners make a model of a beehive using simple materials.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-170.jpg?itok=hjTgTs4u)
For Your Eyes Only
Learners build particulate matter collectors--devices that collect samples of visible particulates present in polluted air.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-884.jpg?itok=ZN4YC59g)
Cool It!
Source Institutions
Learners make a refrigerator that works without electricity. The pot-in-pot refrigerator works by evaporation: a layer of sand is placed between two terra cotta pots and thoroughly soaked with water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-473.gif?itok=bYYEQc6Z)
Vestibular-Ocular Reflex
Source Institutions
In this activity, learners will perform various investigations to understand the vestibular-ocular reflex and learn about the importance of visual cues in maintaining balance.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-268.jpg?itok=JrrGxrYq)
Canjo
Source Institutions
In this activity, learners explore sound by constructing their very own banjo out of a coffee can. Learners experiment with the canjo to change the instrument's pitch and timbre.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-532.jpg?itok=Y07kcNOl)
Energy Sources
Source Institutions
In this activity about the relationship between food and energy (page 5 of PDF), learners conduct an experiment to compare how much energy is released as heat from two different foods.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-239.png?itok=Fd4iSEGB)
Sky Diver
Source Institutions
Students design and build their own parachutes in this hands-on engineering project.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-891.jpg?itok=ExiyNYXb)
Create Your Own Time Capsule
Source Institutions
In this archaeology-related activity, learners build their own time capsule and choose a storage location and a date to reopen it.