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In this activity, learners discover that the Moon, like Earth, is made up of layers of different materials. Learners work in teams to make models of the interiors of the Moon and Earth.

In this activity, learners shrink the scale of the vast solar system to the size of their neighborhood.

In this activity, learners make their own edible DNA double helix out of candy and find out about the shape of DNA.

In this activity, learners thread gumdrops together to make a model of a polymer.

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

In this activity, learners eat a snack and make a model of the plumbing system of a volcano.

In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

In this activity, learners make "solar cookies," edible models of the Sun's outer layers using sugar cookies and toppings.

In this activity, learners model hot spot island formation, orientation and progression with condiments.

No glue is needed for learners of any age to become marshmallow architects or engineers.

In this activity, learners build edible models of DNA, while learning basic DNA structure and the rules of base pairing.

In this activity, learners use marshmallows and gum drops to construct seven models of molecules. Learners classify (solid, liquid or gas) and draw diagrams of the molecules.

In this activity, learners use edible models of the DNA molecule to transcribe an mRNA sequence, and then translate it into a protein.

Play with your food while learning about engineering! Build a spaghetti bridge, then test its strength by piling on the marshmallows, raw spaghetti, raw linguine and coins.

In this activity, learners explore how engineers have developed big wheels or Ferris wheels.

In this activity, learners build edible models of Jupiter and Earth to compare their sizes and illustrate the planets' internal layers.

In this activity, learners separate the components of Gatorade using a home-made affinity column.

Learners work in groups to construct bridges using stale marshmallows and toothpicks.

This is a classic exercise for visualizing the scale of the Solar System.

In this quick activity about pollutants and groundwater (page 2 of PDF under Water Clean-up Activity), learners build a model well with a toilet paper tube.