Spring (March 20 or 21)

This 2-minute animated video explains what the equinox is and explains "the equilux".

This 4-minute video from the SciShow Kids channel describes the spring equinox and how the earth moves.

This one and half minute video explains equinoxes and what causes them. Learn how equinoxes influence the seasons and hours of daylight on each planet.

This encyclopedia entry from National Geographic has great information about equinoxes, including a photo gallery and key vocabulary terms.

This is a 12-minute video explaining the sun's arc through the sky at different points in the year, including the solstice and equinox. (for older elementary or secondary students)

This Wonderopolis page has great information explaining the vernal equinox. Is it on the same day in the northern and southern hemispheres? Can you really balance an egg on end during the vernal equinox? The site has images, videos and definitions of key terms.