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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-000-000-004-094.png?itok=BB77-_B0)
The Awesome Game Race
Source Institutions
In this engineering activity, learners design their own board games.
![](/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-000-000-001-660.jpg?itok=RlMjWpfU)
Base Station Walk-Back
Source Institutions
In this activity, learners will train to improve lung, heart, and other muscle endurance as they walk a progressive, measured distance.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-043.jpg?itok=fb-MMfZx)
Making Sense of Sensors
Source Institutions
In this activity, learners explore sensors and focus specifically on how to measure humidity using a sensor.
A Day in the Life of a San Francisco Native Animal
Source Institutions
In this activity, students will learn some key information about a San Francisco native animal and then write a firsthand account of their experience from the perspective of that animal in the time be
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-017.jpg?itok=efJhdQ9S)
The Desert Blooms!
Source Institutions
This activity attempts to clear up the common misconception that deserts are always hot, totally dry, and uninhabitable.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-765.jpg?itok=rKoFGTIl)
Don't Stop for Hitchhikers
Source Institutions
In this activity, learners role-play the part of lake inhabitants and the aquatic exotics who displace the native species.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-981.jpg?itok=Dzk9ry5O)
Critical Load
Source Institutions
In this activity, learners explore the concepts of structural engineering and how to measure the critical load, or the maximum weight a structure can bear.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-759.jpg?itok=6Nbm7sc8)
Plankton Feeding
Source Institutions
This activity provides a hands-on experience with a scale model, a relatively high viscosity fluid, and feeding behaviors.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-255.jpg?itok=95bH1-76)
Handheld Water Bottle Rocket & Launcher
Source Institutions
In this activity, learners build handheld rockets and launchers out of PVC pipes and plastic bottles. Use this activity to demonstrate acceleration, air pressure, and Newton's Laws of Motion.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-533.png?itok=PSFWCTBj)
Using a Sundial
Source Institutions
In this activity (on page 12 of the PDF), learners make a sundial (shadow clock) appropriate for their geographic location in the northern hemisphere and use it to tell time.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-050.jpg?itok=8zbHYqfR)
Pulleys and Force
Source Institutions
In this activity, learners explore the concept of force and how pulleys are used in everyday life to make work easier.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-673.jpg?itok=XpIDWKhF)
Mass, Area, Volume
Source Institutions
In this activity (page 18 of PDF), learners will measure the volume of impact craters created by projectiles of different masses.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-257.jpg?itok=10cCWnWG)
Is It Living?
Source Institutions
This activity (on pages 10-12 of the PDF) encourages learners to consider what makes living things different from non-living things.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-044.jpg?itok=aqEnjdsN)
Measuring the Wind
Source Institutions
In this activity, learners explore how anemometers work to record wind speeds and how the equipment has undergone engineering adaptations over time.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-798.png?itok=IKCcV01K)
Cook Up a Comet
Source Institutions
In this activity (on page 5 of PDF), learners use dry ice and household materials to make scientifically accurate models of comets.
![](/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-000-000-002-001.jpg?itok=Y9m4EbMl)
Treasure Hunt: Finite-State Automata
In this computer science activity about finite-state automaton (on page 45 of the PDF), learners use a map and choose various pathways to find Treasure Island.
Composting: A Scientific Investigation
Source Institutions
In this activity, learners conduct a scientific investigation involving decomposition and discover that the life cycle of trash is affected by its organic or inorganic nature.