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In this game, learners cutout a model black hole "cone" and attempt to roll around a marble or other small spherical object without touching the event horizon.

Learners create three solutions with different levels of salinity. They compare the density of these solutions by coloring them and layering them in a clear plastic cup and in a soda bottle.

In this activity, learners make a model of the solid Earth's layers that's good enough to eat! Learners use tasty foodstuffs to simulate Earth's inner core, outer core, mantle, and crust.

Based of the The Tech Challenge 2015, learners will engage in two mini-design challenges related to seismic engineering.

This activity attempts to clear up the common misconception that deserts are always hot, totally dry, and uninhabitable.

In this hands-on activity, learners use the steps of the design process to create a hook to rescue a "space capsule" from the water.

In this activity on page 7 of the PDF, learners investigate the solubility of gas in water at different temperatures. This experiment will help learners determine if temperature affects solubility.

In this activity (on page 12 of the PDF), learners make a sundial (shadow clock) appropriate for their geographic location in the northern hemisphere and use it to tell time.

This activity (on pages 10-12 of the PDF) encourages learners to consider what makes living things different from non-living things.

In this demonstration, learners explore a variation of a Foucault pendulum, but upside down.

In this chemistry demonstration, acid rain is simulated in a petri dish.

In this activity, learners build their your own seismograph with household materials to document shaking.

In this 7-10 day investigation, learners develop an understanding of waves and tides and their motion through discussion, demonstration, and hands-on activities.

This lesson plan provides learners with two activities to explore the connections between events in their lives and the seasons of the year.

In this chemistry activity (page 3 of the PDF), learners will learn about crystals by growing their very own.

Learners build particulate matter collectors--devices that collect samples of visible particulates present in polluted air.

In this demonstration about force and motion, learners will explore the forces that affect a pendulum A simple model pendulum comprised of a ball and string demonstrates how pendulums work as well as

Learners make a refrigerator that works without electricity. The pot-in-pot refrigerator works by evaporation: a layer of sand is placed between two terra cotta pots and thoroughly soaked with water.

In this activity, learners will model the mechanical weathering and erosion of rocks in a stream or river.

In this archaeology-related activity, learners build their own time capsule and choose a storage location and a date to reopen it.