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How Does Water Climb a Tree?
Source Institutions
In this activity, learners conduct an experiment to explore how water flows up from a tree's roots to its leafy crown.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-998.jpg?itok=6O0Owt2V)
Water Drop Races
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In this activity, learners will explore the physics of liquids and gas by playing with both! Learners of any age use their own breath to move drops of water across a smooth wax paper surface.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-026.png?itok=VvNGp80V)
Wash This Way
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In this activity on page 4 of the PDF, learners investigate the importance of washing their hands.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-032.png?itok=b0aWIjmk)
Water: Clearly Unique!
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In this activity on page 4 of the PDF (Water in Our World), learners conduct some quick and easy tests to determine the differences between water and other liquids that look very similar to water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-199.gif?itok=G-LftiUo)
The Amazing Water Trick
Source Institutions
Using two baby food jars, food coloring, and an index card, you'll 'marry' the jars to see how hot water and cold water mix.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-513.jpg?itok=jeXuXg4C)
Experiencing Parallax With Your Thumb
Source Institutions
In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-156.png?itok=244XUA55)
Rocket Pinwheel
Source Institutions
This is an activity about motion, power, air and Newton’s Third Law of Motion, which states that for every action there is an equal and opposite reaction.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-228.jpg?itok=9ZDttJsR)
Trip Wire
Source Institutions
In this activity, learners build simple alarms that they can attach to anything, such as a drawer or doorway. This activity introduces learners to electricity, circuits, and currents.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-231.jpg?itok=w0ZmBMV2)
Motor Bird
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In this activity, learners build a bird that flies in place with help from a motor, wire, and some straws.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-225.jpg?itok=KofhoiWd)
Paddle Boat
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In this activity, learners build an old-fashioned paddle boat out of simple materials.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-033.jpg?itok=dqs6UL45)
Does Size Make a Difference?
Source Institutions
In this activity on page 15 of the PDF, discover how materials and physical forces behave differently at the nanoscale.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-224.jpg?itok=SXL_8MHs)
Glider
Source Institutions
In this activity, learners construct a paper glider to experiment with aerodynamic forces.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-172.png?itok=UCCLKXDV)
Make Your Own Rain Stick
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This activity provides step-by-step instructions on how to build a rain stick, a musical instrument originating in South America.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-230.jpg?itok=lFvJ70aT)
Speedboat
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In this activity, learners build a speedboat using paint paddles, a propeller, and film canister. Learners attach a simple circuit and motor to the boat to power the propellers.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-226.jpg?itok=l6zD_xD7)
Double Horn
Source Institutions
In this activity, learners explore sound by constructing their very own instruments using PVC pipes, soda bottles, and a straw.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-035.jpg?itok=m_vd41_q)
Lego Mania
Source Institutions
In this activity, learners will put together towers using building bricks, then take the tower apart and challenge themselves to use the same bricks used to build a bridge.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-411.gif?itok=bpmNj6Yj)
Rockets Away!
Source Institutions
In this activity, learners work in teams to construct and test fly drinking straw rockets. Learners explore how changing the rockets' fins affect flight distance.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-232.jpg?itok=cps56lDc)
Marble Drop Game
Source Institutions
Build your own version of a favorite carnival game, in which a marble races down a maze consisting of rows of nails.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-021.jpg?itok=Q12iQc9_)
DIY Sunprints
Source Institutions
In this activity, learners will see how UV light affects colors over time by making their own sunprint on construction paper.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-511.jpg?itok=-Ar4N6xi)
Dancing Spaghetti
Source Institutions
In this chemistry activity, learners use spaghetti to explore density and chemical reactions.