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In this activity, learners will use Google Sky to observe features of the night sky and share their observations.

In this activity, learners explore the different salinities of various sources of water by taste-testing.

In this activity, learners working in pairs saturate a cotton ball using water drops from an eyedropper to demonstrate the high water capacity of clouds.

In this activity, learners will go outside and create a constellation.

In this activity, learners experiment with shadows and light sources to understand the relationship between the angle illumination and the shadow's length.

In this activity, learners will build a model of a nebula using cotton balls and colored water. Astronomers photograph nebulas and add colors to provide information about the nebula's composition.

In this activity, learners observe what would happen to their bodies if they went to outer space without a space suit.

In this activity, groups cut out and sort cards showing items recovered from a crash landing on the Moon. The 12 items range from food and water to rope and matches to a self-inflating life raft.

In this activity, learners explore different types of fossils by making their out of dough and objects from around the house.

Exponga estos pósteres en el salón o déjelos donde los chicos los puedan explorar. Los chicos buscan las respuestas en línea, en libros de consulta, y en calendarios y almanaques.

In this activity, learners make their own "tornado" using two soda bottles and water.

In this activity on page 60, learners examine and simulate wildlife entanglement by experiencing what it might be like to be a marine animal trapped in debris.

In this activity, learners will imagine the challenges and opportunities of asteroid mining.

In this activity (on page 8), learners model how marble statues and buildings are affected by acid rain.

In this activity, learners use a simple 3D model to discover why the Moon has phases.

In this activity, learners craft their own model of a comet on a stick to make it fly around the room.

In this activity on page 4 of the PDF (Water in Our World), learners conduct some quick and easy tests to determine the differences between water and other liquids that look very similar to water.

In this art-related activity, learners make a coin rubbing—a process similar to what archeologists may do with ancient artifacts. This activity can be used in connection with a history or art lesson.

In this activity, learners will see how UV light affects colors over time by making their own sunprint on construction paper.

In this activity (located on page 10 of the PDF), learners explore the properties of spraying and dripping water, while making art.