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Leaves: Extracting Pigments
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In this fun, hands-on autumn activity, learners experiment to discover whether the colored substances in leaves can be separated from the leaves.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-098.png?itok=FcwqA7XH)
Crank It Up
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In this engineering activity, learners explore simple machines and then build cardboard automata using cams.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-322.png?itok=VxBXtOHy)
Invent an Animal
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In this outdoor activity and game, learners explore how animals adapt for survival through coloration, markings and camouflage.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-027.jpg?itok=F82eZ01h)
The Carbon Cycle and its Role in Climate Change: Activity 3
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In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-999.png?itok=lYpJPDXm)
Castle Basics
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In this four-day lesson, learners identify three-dimensional forms in castle design, research different parts of the castle with a focus on their uses, and design and enlarge a banner for the great ha
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-208.png?itok=wcpQmHlk)
Food Chains and Webs
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In this activity, learners investigate feeding relationships. Learners complete a food web and then make a mobile to represent a food chain.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-769.gif?itok=GEpMNOdJ)
Bloomin' Bud Glyph
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In this math lesson, learners practice reading charts and graphs by creating and interpreting glyphs.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-972.jpg?itok=SsEMR4QI)
Get It Write
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In this activity, learners explore how pens have been engineered and re-engineered over time. Learners work as a team to develop a working pen out of everyday items.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-259.jpg?itok=72pgq_xc)
Parabola Basketball
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In this activity, learners build mini-basketball courts and explore the laws of physics. Learners discover that everything you throw or shoot on earth travels in a parabola.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-286.jpg?itok=Bv5--vtQ)
Exploring Strange New Worlds
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This fun and simple hands-on astronomy activity lets learners explore model planets (that they or an educator will create), using methods NASA scientists use to explore our Solar System.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-340.png?itok=ZociroIa)
What Can You Make of It?
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In this activity (located on page 2 of PDF), learners explore alternative uses of a simple paper cup, dubbed a "mystery item." Learners act as detectives and explore the properties and functions of th
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-152.gif?itok=NVzrmUUD)
Cloud Fun
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Learners complete a series of hands-on and investigative activities to explore cumulus clouds.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-227.jpg?itok=cyW5qtpT)
Clay Exploration
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In this activity, learners explore the possibilities of clay as a natural material.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-261.jpg?itok=K8ieKQmZ)
Kaleidoscope
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In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-059.jpg?itok=9DeXgLNH)
Folding Matters
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In this activity, learners explore how the process of folding has impacts on engineering and is evident in nature.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-324.png?itok=goodTb_C)
Flower Powder
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In this outdoor activity, learners use artificial bees and paper models of flowers to find out how bees transfer pollen from one flower to another.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-495.jpg?itok=E2CyE9u6)
Recycle Your Own Paper!
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In this activity (page 2 of PDF under GPS: Garbology Activity), learners will prepare sheets of homemade recycled paper from several different source pulps.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-274.jpg?itok=TA-AIu-f)
Micro Automata
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In this activity, learners build small animated toys that move.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-260.jpg?itok=QMGg2-GJ)
Lever Cowboy
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In this activity, learners build a figure that moves and "comes to life" when they pull its string.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-276.jpg?itok=ZV861GKw)
Hot Air Balloon
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In this activity, learners build a hot air balloon using just a few sheets of tissue paper and a hair dryer.