Pbs Teachers: Scientific American: Superhumans and Bionics: A Heart of Titanium

Explore the composition and physiology of bones, describe how humans lose bone mass and explain how this becomes a challenge for extended space flight. Compare and contrast the decalcifying properties of several liquids.

Investigate innovations that assist baseball umpires in making calls. Examine the accuracy of a "line call" when compared to a taped record of a ball's exact impact location.

Examine dog food nuggets made from different ingredients to discover which nuggets are more likely to clean the teeth surface during a dog's normal chewing activity. Explore the correlation between cost of the food and its teeth-cleaning...

Explore the connection of saturated and unsaturated fats to arterial plaque buildup by building models of their molecular backbones. Examine your diet to determine whether you follow the guidelines suggested by the American Heart...

Discover what "curling" is, and explore ways to make a curling stone move in different directions. See how kids use the scientific method to find out how sweeping affects the motion of a curling rock.

Discover how to jump double dutch, and watch kids perform different double dutch moves. See how kids use the scientific method to find out what has a bigger effect on jump rope performance - hearing or seeing.

Examine eating habits and determine how one can eat food that is healthier and tastier. Develop a proposal and multimedia presentation about improving the quality of food in the school.

Explore the sport of fencing and learn different fencing strategies. Watch kids use the scientific method to find out how the energy of an attack affects accuracy.

Learn about different freeride skiing techniques and forms. Watch kids use the scientific method to figure out how their arm position affects their 360-degree rotations.

Explore the sport of mountainboarding. Watch three mountainboarders use the scientific method to find out which tire pressure will let them maintain speed and control through turns.