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Sugar/Salt Crystals
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In this chemistry activity (page 1 of the PDF), learners will observe a physical change.

Bendy Bones
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In this activity (on pages 19-24 of PDF), learners soak chicken bones or eggshells in vinegar for several days.

Melts in Your Bag, Not in Your Hand
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In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation.

Fruit Fly Trap
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Build a fruit fly trap out of a 2-liter plastic bottle and some rotten fruit! Fruit flies are easy to catch in warm weather. Once you catch some, you will be able to see their life cycle up-close.

Pickle Lab
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In this online activity, learners experience the thrill of pickle making, and explore how a cucumber becomes a pickle.
Double or More
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Choose a recipe to double (or triple, quadruple, or halve). Show everyone the recipe and engage them in figuring out: How much will we need to increase the recipe to feed everyone?

Crushing Test
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In this activity, learners design a crushing test and discover that identifying and controlling the variables may be difficult.

Frijolitos
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Esta actividad enseña la proporción y razón por hacer que los aprendices hagan "ensaladas" que combinan tres tipos de frijoles en tres combinaciones diferentes.

Red, White and Blue II Demonstration
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In this chemistry demonstration, learners investigate the rule "likes dissolve likes" by combining three, immiscible liquids to create a colorful density column.
Breakfast Sweets
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In this math activity, learners guess which cereals contain the most sugar. Learners use the nutrition labels on the cereal boxes to find the cereal with the least amount of sugar.

Erupting Fizz
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This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.

Cookie Surface Area
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This is an activity (on page 2 of the PDF under Surface Area Activity) about surface area to volume ratio.

Protect That BRAIN!: Mr. Egghead
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This activity demonstrates the importance of wearing a helmet to protect the brain. An egg is used to symbolize a head with the shell as the skull and the inside of the egg as the brain.

Invisible Ink
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In this simple chemistry activity (page 1 of PDF under SciGirls Activity: Colorblind Dogs) about acids and bases, learners will mix a baking soda and water solution and use it to paint a message on a

Lifting Lemon
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In this physics demonstration, learners will be surprised when a lemon slice appears to magically levitate within a pint glass.

M&M's in Different Sugar Solutions
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In this activity, learners investigate whether having sugar already dissolved in water affects the speed of dissolving and the movement of sugar and color through the water.

Milk Magic
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In this activity, learners experiment with how dish soap and fat interact by making a colorful swirl.

Marshmallow Puff Tube
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In this demonstration/activity, learners observe as a regular size marshmallow is blown through a tube made from a manila file folder.

Scented Dough
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In this activity, learners follow a recipe to create play dough scented with fruit-flavored drink mix.

Make An Impact
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In this hands-on activity, learners simulate the crashing and smashing of a meteor impact using household cooking supplies.