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In this activity, learners create an origami model of DNA, demonstrating its double helix structure. Two templates are available as PDFs: a standard template with the base pairs already colored or...

In this design challenge activity, learners build a tower that can support a tennis ball at least 18 inches off the ground while withstanding the wind from a fan. Learners will build a sturdy frame...

In this activity, learners build bridges out of newspaper and tape to explore how structures are designed to bear loads. Learners adjust and modify their designs to accommodate a certain amount of...

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. This activity page...

In this activity, learners use information gathered from a variety of sources to design and make their own insect. Learners design and create an insect using household and/or arts and crafts...

In this activity, learners investigate the concepts of relative size and distance by creating a basic model of the solar system. Learners will work at one end of a hallway, large room or outdoor...

In this activity, learners imitate the way vocal cords work by building a model from a plastic cup, rubber band, and a straw. Then learners blow through the straw onto the model, and listen to the...

Straws and pipe cleaners are terrific materials for building models of pyramids and cubes. Start out building a triangle or square, then make it three dimensional and turn them into pyramids or...