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Tree Poker
Source Institutions
In this activity (p.14-15 of PDF), learners discover the concepts of competition and limiting factors as they relate to plant and animal communities.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-039.png?itok=-c5Wa_Hx)
Pop Can "Hero Engine"
Source Institutions
In this activity, learners build water-propelled engines from soft drink cans.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-510.png?itok=2QJ6-LL_)
Exploring Fabrication: Self-Assembly
Source Institutions
In this activity, learners participate in several full-body interactive games to model the process of self-assembly in nature and nanotechnology.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-703.jpg?itok=a-s5mTFc)
Topological Puzzles
Source Institutions
In this activity, learners construct three math puzzles out of simple materials like wood, string, and Styrofoam.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-949.jpg?itok=QBTKM4q2)
Roller Coasters
Source Institutions
In this design challenge, learners will create their own roller coaster using household objects for the track and a marble or small ball as their cart.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-975.jpg?itok=dT3ypJTh)
Kidbots
Source Institutions
In this activity, one person acts as a human robot while another acts as their developer by programming their actions.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-752.jpg?itok=ZY7E7FZM)
Measure the Sun's Size
Source Institutions
In this activity, learners make their own pinhole viewer in order to measure the size of the sun.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-362.gif?itok=Q4Lqdv7b)
Pictures From Light
Source Institutions
Did you know that using a lens one can bend light to make pictures of the world? It's true!
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-592.png?itok=t48lDyhK)
Ice on Mars
Source Institutions
In this activity, learners use sand and ice cubes to create a model of permafrost and the effects of the ice melting through the surface.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-020.png?itok=OCpzK8i7)
Milli's Insulation Investigation
Source Institutions
In this activity on page 2 of the PDF, learners test different materials to find out which is the best insulator.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-606.png?itok=LTqLI1vr)
Breaking the Tension: Surface Tension 1
Source Institutions
Learners explore how the attractive forces between water molecules create surface tension and allow certain objects to float on the surface of water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-222.jpg?itok=a3kErsHV)
Rolling Returns
Source Institutions
In this activity, learners build a special rolling can that returns back to you when you push it forward. Use this activity to demonstrate the transfer of energy between kinetic and potential energy.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-031.jpg?itok=43KlQuTa)
Papermaking at Home
Source Institutions
Learners will follow a specific process to make their own paper using scrap paper, newspaper, or junk mail.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-544.png?itok=8YsqRB0G)
Good Stress
Source Institutions
In this activity about physical stress (page 28 of PDF), learners discover that muscles and bones need to work to stay strong.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-148.png?itok=Y-C1Upaa)
Mummy Magic
Source Institutions
Make your own mummy! Using a combination of salts, transform an apple into a mummy and discover how the Ancient Egyptians used drying as one step in the mummification process.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-019.jpg?itok=pT-VpR4T)
Clean Me Up, Snotty
Source Institutions
Learners will explore the chemistry of mucous and its importance to our health by following a process to make their own replica "snot." The activity includes a time and age recommendation, a materials
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-578.gif?itok=KjQMOnbm)
Finding the Carbon in Sugar
Source Institutions
In this activity about combustion and energy, learners observe a burning candle in a sealed jar and the burning of white sugar.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-027.jpg?itok=wQAv64V8)
Cup Towers
Source Institutions
In this activity, learners explore different ways to stack cups to meet a personal goal.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-552.png?itok=NoDA_v-c)
A System of Transport
Source Institutions
In this activity about the human heart (on page 5 of the PDF), learners work in teams to simulate the volume of blood moved through the circulatory system by transferring liquid into--and through--a s
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-220.jpg?itok=KiOsfwBS)
Weather Vane
Source Institutions
In this meteorology activity, learners build weather vanes using straws, paperclips, and cardstock.