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Paths and Ponds
Source Institutions
In this activity, learners use squares to figure out how many border tiles are needed to enclose different areas.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-035.png?itok=v3TsjOPX)
Beaded Braids: Investigating Patterns & Ratios
Source Institutions
In this activity learners create patterns of hair beads.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-540.png?itok=bSAm2oU4)
Boomerang
Source Institutions
Learners trace, cut out and fly a boomerang, outdoors or in a large indoor space.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-533.jpg?itok=0ryyd8Ig)
Helicopter Twirl
Source Institutions
Learners cut and fold a paper helicopter from the template in this PDF. They practice twirling the helicopter and observe what happens as they modify their tries.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-047.png?itok=YKOGj5n9)
Cool Trees
Source Institutions
This warm weather activity introduces learners to the impact trees have on blocking the sun's heat and reducing temperature on the Earth's surface.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-562.png?itok=j9vGB7w2)
Web It!
Source Institutions
In this outdoor activity, learners investigate spider webs and feeding behavior, particularly how spiders trap food in their sticky silk webs while not getting stuck themselves.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-788.png?itok=O-ZK1qRR)
Scent Tracking
Source Institutions
In this wintertime outdoor activity, learners role play wolves tracking their prey by following scented trails.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-783.jpg?itok=CrxoOyj1)
Water Underground
Source Institutions
Many people get water from a source deep underground, called groundwater.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-756.jpg?itok=L-q0j4tI)
Make a UV Detector
Source Institutions
In this activity, learners use tonic water to detect ultraviolet (UV) light from the Sun and explore the concept of fluorescence.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-852.png?itok=9gngTATg)
Feet Fit
Source Institutions
In this self-measuring activity, learners measure and record the length of their foot.
![](/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-000-000-000-787.png?itok=luXRvpUX)
Beachcombing
Source Institutions
In this outdoor activity, learners become beachcombers as they walk on a sandy beach in search of evidence of life.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-545.png?itok=XaJ71nUc)
Big Bubbles
Source Institutions
How do you measure a bubble when it's floating? You can't really, but in this activity, learners can measure the diameter of the ring of suds a bubble leaves on a flat surface.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-785.jpg?itok=URArJ34k)
Make a Lake
Source Institutions
Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others?
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-753.jpg?itok=bn9de7f4)
Big Sun, Small Moon
Source Institutions
Learners will explore the concept of angular distance, and investigate why the moon appears to be the same size as the sun during a solar eclipse, despite the sun being much larger.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-784.jpg?itok=DVha_VvG)
Window Under Water
Source Institutions
Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-821.gif?itok=I_u9qxVN)
Size Wheel
Source Institutions
In this fun sticker activity, learners will create a size wheel with images of objects of different size, from macroscopic scale (like an ant) to nanoscale (like DNA).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-210.png?itok=m-o95KID)
Out of Control
Source Institutions
In this outdoor activity, learners release a portion of a lawn from human control—no mowing, no watering, no weeding, no pest control—and then investigate the changes that result over several weeks.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-211.png?itok=tYwpdyV8)
For the Birds
Source Institutions
In this outdoor activity, learners turn the fun of feeding wild birds into an investigation of bird behavior.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-205.png?itok=gSzMiZhd)
The Old White Sheet Trick: Light and Insect Behavior
Source Institutions
In this outdoor, nighttime activity, learners gather around a brightly lit, white surface and study the behavior of nocturnal animals attracted to the light, particularly night fliers.