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Multiple Reflections
Source Institutions
In this activity, learners explore how mirrors reflect light and change the way we see things.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-871.jpg?itok=HrqxX34z)
Sliding and Stuttering
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Learners use a spring scale to drag an object such as a ceramic coffee cup along a table top or the floor.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-374.gif?itok=FfdPd7Mt)
Space Stations: Measure Up!
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In this activity, learners work in pairs to measure each other's ankles with lengths of string.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-557.gif?itok=l90KskkB)
Make a Human Scale Ladder
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In this quick activity about size and scale (on page 2 of the PDF under What's Nano?
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-866.jpg?itok=aeniFI_r)
The Thousand-Yard Model
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This is a classic exercise for visualizing the scale of the Solar System.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-208.png?itok=X9xoLUl9)
Modeling the Seasons
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This activity provides instructions for learners to create models of the Earth and then to model a "day" on Earth as well as modeling the seasons.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-769.jpg?itok=N74UqfZ-)
Tug-of-War
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This activity (on page 2 of the PDF under SciGirls Activity: Tug O' War) is a full inquiry investigation into tug-of-war physics. Groups of learners will test two tug-of-war strategies.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-872.jpg?itok=mBKhSo_v)
Wet Pennies
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Learners initially test to see how many drops of liquid (water, rubbing alcohol, and vegetable oil) can fit on a penny.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-240.jpg?itok=rt7W-2Be)
How Big Were the Dinosaurs?
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In this activity (located on page 4 of PDF), learners gain insight into the actual size of dinosaurs and practice making estimations and measurements.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-254.gif?itok=fcKLTmzD)
Pea Brain!: Explorations in Estimation
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In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-812.gif?itok=n2gfTtxU)
Greeting Card Boxes
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In this activity, learners make cool boxes out of old (or new) greeting cards or postcards.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-147.jpg?itok=w0mmWqxK)
Foam Rocket
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In this activity, learners work in teams build and launch rubberband-powered foam rockets.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-906.jpg?itok=dqS5AHvV)
Balsa Towers
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Learners work in groups to design and build a tower out of balsa wood. As a motivator, they can compete to build a tower with the highest strength-to-weight ratio.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-251.png?itok=_URCU9TD)
Introduction to the Scientific Method
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In this activity (page 26 of the PDF), learners make observations, formulate hypotheses and design a controlled experiment, based on the reaction of carbon dioxide with calcium hydroxide.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-730.png?itok=b-soPRD-)
Number Sense and Computation: To Half or Half Not
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In this math lesson, learners use slices of bread and geoboards to explore several ways to divide a rectangle in half. Learners also identify equivalent fractions that represent one-half.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-718.png?itok=sDIqSwbQ)
Tree-mendous Plots
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In this math lesson, learners record and graph plant growth and interpret data. Learners plant seeds, and once the seeds sprout, record the change in height of the plants for several days.
Waves: An Alternative Energy Source
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In this data analysis and environmental science activity, learners evaluate the feasibility of wave energy as a practical alternative energy source using ocean observing system (OOS) buoys.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-637.png?itok=0rZ4ozbi)
Building with Wonderful Junk
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In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-255.jpg?itok=OxzR_tyN)
How Small Can You Cut?
Source Institutions
In this lesson, learners cut paper into very small pieces to explore the small size of quarks, the smallest thing we know of on Earth.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-046.jpg?itok=kF6cFmDo)
Postcards from Space
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Using information from the My Place in Space lithograph, learners write and/or draw a postcard to friends and family as if they had gone beyond the interstellar boundary of our Solar System, into the