Careers in Computer Science
Faculty members at Columbia University discuss career opportunities in Computer Science. (04:37)
Boxed In and Wrapped Up
Students find the volume and surface area of a rectangular box (e.g., a cereal box), and then figure out how to convert that box into a new, cubical box having the same volume as the original. As they construct the new, cube-shaped box from the original box material, students discover that the cubical box has less surface area than the original, and thus, a cube is a more efficient way to package things. Students then consider why consumer goods generally aren't packaged in cube-shaped boxes, ev
Tools and Equipment, Part I
Through a series of activities, students discover that the concept of mechanical advantage describes reality fairly well. They act as engineers creating a design for a ramp at a construction site by measuring four different inclined planes and calculating the ideal mechanical advantage versus the actual mechanical advantage of each. Then, they use their analysis to make recommendations for the construction site.
Buck-Toothed Demon Lizard | How To Confuse A Mosquito
Dr. Hans Sues from the National Museum of Natural History discusses the new T. rex relation he recently identified. Also, learn how we might avoid mosquitoes by confusing their ability to hone in on us.
PediNeuroLogic Exam: Introduction: General Physical Examination
In the neurological assessment of the child don't neglect the general physical examination. Some of the parts of the general examination that are particularly important to note are the following: Somatic growth - measure height and weight and compare percentiles with head circumference; Search for dysmorphic features - carefully study the face especially the midface. There is the old adage that the face reflects the brain because anomalies of the midface are often associated with underlying brai
PediNeuroLogic Exam: Newborn: Abnormal: Tone - Scarf Sign
The scarf maneuver demonstrates low shoulder girdle tone. The hand actually can be pulled beyond the opposite shoulder and the elbow goes past the midline. A neuroscience tutorial focusing on those aspects of the pediatric neurological examination that are unique to the child's nervous system, with an emphasis on important neurodevelopmental milestones.
PediNeuroLogic Exam: Newborn: Abnormal: Reflexes - Deep Tendon Reflexes
Testing deep tendon reflexes on this baby demonstrates that they are present. This is important in trying to sort out if the baby has low tone from an upper motor neuron lesion or if he has a lower motor neuron or muscle disorder. In older children and adults, an upper motor lesion causes spasticity but in babies an upper motor neuron lesion can cause hypotonia. A disease of the lower motor neuron is unlikely with the deep tendon reflexes being present. The baby could still have a muscle disorde
Student Greeting Highlights, 2011
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