Notice how magazines print photos using dots made up of percentages of only three colors and black. Try your hand at using percentages of cyan, magenta and yellow to match the magazine color displayed.
Test your knowledge of atoms, orbitals, periods/groups, characteristics of families, isotopes and relative mass. Take this 39-question test, review your correct and incorrect answers, and print out your assessment.
You'll be challenged to test your reaction time under different conditions and then compare the results. You'll find out how processing in the brain changes reaction time under different conditions: being distracted, being presented with emotionally charged stimuli, or being faced with increasing complex tasks.
Observe various migratory species (hummingbirds, butterflies, etc.) and report their sightings online. Share and review the sightings with other students/classrooms to track hemispheric migratory patterns.
When the light of a star passes through a spectrograph, elements of that star reveal a specific signature. Compare the spectra of four elements and a star to identify which elements you can detect in the star's atmospere.
Join the celebration by creating paper butterflies that will migrate to their counterparts in Mexico for the winter. Children in Mexico who live beside the monarch's winter sanctuaries send them north in the spring.