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Our Sense of Sight: Color Vision
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In this activity, learners investigate color vision as well as plan and conduct their own experiments.

Two Washers
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In this activity, learners create a mind and math puzzle that requires a three-dimensional solution.

Planaria Regeneration
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In this experiment with planaria (a type of flatworm), learners will investigate the capability of different body sections to regenerate.

Paths and Ponds
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In this activity, learners use squares to figure out how many border tiles are needed to enclose different areas.

Making a One-Second Timer
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This lab activity has learners create a pendulum with a one-second period.

Comparing the Density of an Object to the Density of Water
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Learners compare the weight of equal volumes of wax, water, and clay. Learners discover that since the wax weighs less than an equal volume of water, it is less dense than water and will float.

Beaded Braids: Investigating Patterns & Ratios
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In this activity learners create patterns of hair beads.

Watching Crystals Grow
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Learners will compare the growth rate and appearance of crystals forming on small rocks to those growing on miscellaneous objects. Learners will also investigate how temperature (warm vs.

Flocking for Food
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In this outdoor beach activity, learners use a variety of "beaks" (such as trowels, spoons or sticks) to hunt for organisms that shore birds might eat.

Traveling Through Different Liquids
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Learners observe and record what happens when they manipulate bottles containing a liquid (water or corn syrup) and one or more objects (screw, nail, paper clip).

Criminal Info
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In this fun math activity (page 5 of the pdf), learners will help a secret agent crack a case by solving math problems.

Canine House of Cards
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This simple construction activity teaches the importance of architectural structure. Learners build and test designs for a paper "doghouse" strong enough to hold the weight of a jumbo dog biscuit.

Landing the Rover
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In this team design challenge (page 19-24 of PDF), learners "land" a model Lunar Rover in a model Landing Pod (both previously built in activities #3 and #4 in PDF).

Why Circulate?
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In this activity related to the human circulatory system (on page 10 of the PDF), learners observe the dispersion of a drop of food coloring in water, draw conclusions about the movement of dissolved

Drugs, Risks and the Nervous System
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In this activity, learners estimate risks associated with different events and compare their estimates to the real possibilities.

Subtractive Paint Prints
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In this activity, learners of all ages will experiment with paint and printmaking.

Loopy Geometry
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Discover geometry by creating shapes from loops of paper. In this activity, paper loops transform to give you totally new structures when you cut them.

Be a Scanning Probe Microscope
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In this activity, learners investigate Scanning Probe Microscopes (SPM) and then work in teams using a pencil to explore and identify the shape of objects they cannot see, just as SPMs do at the nano

Gumdrop Dome
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In this activity (located on pages 23-24 of the PDF), learners are introduced to structural engineering and encouraged to practice goal-oriented building.

Exercise and Memory
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This activity (page 1 of the PDF under SciGirls Activity: Exercise and Memory) is a full inquiry investigation into the effects of exercise on short term memory.