Ice on Mars
Use sand and ice cubes to explore polar regions, climate change, Mars and freezing/melting at Howtosmile.org. Create a model of permafrost and the effects of the ice melting through the surface in the TERC Ice on Mars activity.
What is Light?
The ocean and our whole planet are full of light forms—incandescence and luminescence, fluorescence and phosphorescence, chemiluminescence and bioluminescence. Explore light at Howtosmile.org in the COSEE activity What is Light?
Recipe for a Moon
Discover that the Moon, like Earth, is made up of layers of different materials. At Howtosmile.org, make models of the Moon's and Earth's interiors. Use fun food items in the Recipe for a Moon activity from the Lunar and Planetary Institute.
Why is the Sky Purple?
Use an egg to show why the sky changes color at Howtosmile.org. Discover what makes the sky look blue on sunny days and red during sunrise and sunset, in the Why Is the Sky Purple? activity from Colorado State University.
Conduct a simple experiment on how temperature changes make things expand or contract at Howtosmile.org. in the Del Monte Vibrating Pennies activity, investigate how heat from your hands warms air in a bottle and lifts a penny sitting on the mouth of the bottle.
Drop IT!: Depth Perception
Why do we need two eyes to judge depth? Find the answer at Howtosmile.org. Compare the accuracy of dropping objects while using only one eye or both eyes, in the Drop IT! activity from University of Washington.
Construct a tetrahedron at Howtosmile.org. Describe the linear dimensions, area and volume using non‑traditional units of measure, in the Tetrahedral Kites activity from the National Council of Teachers of Mathematics.
Explore genes and traits by investigating your fingerprints at Howtosmile.org. Discover that genes are kind of a recipe for you, in the Yabba-Dabba-You activity from the American Chemical Society.
Play outdoors to review parts of the synapse and their functions. The Synaptic Tag game from University of Washington models how enzymes break down neurotransmitters at Howtosmile.org
Why Doesn’t the Ocean Freeze?
Compare how salt water and fresh water freeze at Howtosmile.org. Experiment to contrast how pond and ocean animals survive cold winters. The activity Ponds Freeze in the Winter—Why Doesn't the Ocean, from the New England Aquarium, covers freezing points and animal adaptation.
Construct possible food webs for six different ecosystems at Howtosmile.org. Learn about producers vs. consumers and different kinds of consumers (herbivores, carnivores, omnivores, decomposers and scavengers) in the Food Webs activity from Baylor College of Medicine.
Digestive System: A Kinesthetic Lesson
Act out each function of the digestive tract's organs, tissues, and cells at Howtosmile.org. Simulate peristaltic movement and each element of digestion in the Digestive System: A Kinesthetic Lesson activity from the National Health Museum.
Rainbow in the Room
Generate a roomsized rainbow for the International Year of Light. Get learners excited about light with the Rainbow in the Room activity from Baylor College of Medicine. Learners also make their own rainbow art. Find lots more light activities at Howtosmile.org.
Share Your Planet
For Earth Day or any day, in this "musical chairs" type game, share a smaller and smaller number of "planets" until you're down to just one—Earth. Explore how we all can coexist in the TERC Share Your Planet Activity at Howtosmile.org
Gassy Lava Lamp
Create a bubbling lava lamp with oil, water, food coloring and antacid tablets at Howtosmile.org. Introduce concepts related to density, hydrophobicity vs. hydrophilicity, and chemical reactions in the Gassy Lava Lamp activity from Community Science Workshop.