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In this activity, learners search for various kinds of items made from minerals around their home or school, including toothpaste, wall paint, kitty litter, and bricks.

free Ages 8 - 14 45 to 60 minutes
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Most people break at least two bones in their lifetime. In this activity, learners will use celery stalks to model the many ways that bones can fracture.

1 cent - $1 per student Ages 8 - adult 10 to 30 minutes
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Although we may not admit it, all humans fart or pass some gas. In this activity, learners make their own model to mimic food passing through intestines and discover what releases gas.

$1 - $5 per group Ages 8 - adult 10 to 30 minutes
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En esta actividad la tira cómica muestra a los participantes como pueden hacer un experimento simple para ver cuales líquidos son ácidos.

1 cent - $1 per group Ages 11 - 14 10 to 30 minutes
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In this group or individual activity, learners are encouraged to watch birds near home or school—possibly where birds are nesting in a tree, pecking in a park, feeding from a feeder, or flying through

free Ages 6 - 14 1 to 7 days
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In this activity, learners build a bird feeder or feeders to attract birds for observation.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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No glue is needed for learners of any age to become marshmallow architects or engineers.

1 cent - $1 per student Ages 4 - 14 30 to 45 minutes
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In this simulation activity, learners observe what can happen when ocean waves churn up water and oil from an oil spill.

1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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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.

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners add food coloring to hot and cold water in order to see how fluids at different temperatures move around in convection currents.

$1 - $5 per group Ages 8 - adult 5 to 10 minutes
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En esta actividad, Mateo y Cientina descubren una sustancia nueva y extraña que se llama "Oobleck". En su experimento ven que Oobleck tiene propiedades de sólidos y líquidos.

free Ages 8 - 14 10 to 30 minutes
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In this activity, learners explore how eating unhealthy food can damage a heart and arteries.

1 cent - $1 per student Ages 8 - adult 5 to 10 minutes
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En esta actividad, Mateo y Cientina enseñan a usar modelos para ver las causas de las fases lunares.

free Ages 8 - 14 5 to 10 minutes
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This game teaches ratio and proportion by having learners make "salads" that combine three types of beans in different combinations.

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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Some bugs can walk on the surface of a lake, stream, river, pond or ocean.

$1 - $5 per group Ages 8 - adult 5 to 10 minutes
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In this activity, learners use candy pieces and a cookie to make an accurate model of the Sun they can eat. Parts of the delicious model include solar granules, sunspots, and solar prominences.

$1 - $5 per student Ages 6 - adult 10 to 30 minutes
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Water on Earth is in lakes, the ocean, rivers, underground, and frozen glaciers.

$10 - $20 per group Ages 8 - adult 30 to 45 minutes
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In this outdoor fall activity, learners find out what living in or under a layer of leaves is like.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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This assortment of mathematical games can be played while traveling.

free Ages 4 - 14 10 to 30 minutes
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In this activity, learners explore a bucket of sand and beach objects.

$1 - $5 per group Ages 4 - adult 10 to 30 minutes