Montessori Mom

The Spring Equinox (also called the Vernal Equinox) happens around March 20th each year. It's the moment when day and night are almost exactly equal in length — about 12 hours each. The word "equinox" comes from the Latin words aequus (equal) and nox (night).

This is a wonderful time to explore astronomy, seasons, and the natural world with your child!

Materials

• A globe or ball to represent the Earth
• A flashlight or lamp to represent the Sun
• The equinox printout (below)
• Optional: markers, crayons, or colored pencils

Recommended: Montessori Earth Globe — a beautiful wooden and plastic globe perfect for teaching children about the Earth's land and water. Or for younger children, try the Hugg-A-Planet Soft Plush Globe — a huggable, educational globe they can hold and squeeze!

Free Printout

Download: Equinox Printout (PDF) — A diagram showing how the Earth is lit equally during the equinox, with half the globe in daylight and half in darkness.

What Happens During the Equinox?

The Earth tilts on its axis as it orbits the Sun. During most of the year, one hemisphere gets more sunlight than the other — that's why we have seasons! But during the equinox, the Earth's tilt is neither toward nor away from the Sun. The result:

• Day and night are almost equal — about 12 hours each everywhere on Earth
• The Sun rises exactly in the east and sets exactly in the west
• Spring begins in the Northern Hemisphere (and autumn begins in the Southern Hemisphere)

Activities

1. Globe and Flashlight Demonstration

This is a hands-on way to show your child what causes seasons:

1. Hold the globe and tilt it slightly (about 23 degrees — like the real Earth)
2. Shine the flashlight on the globe from a few feet away
3. Show how when the top (North Pole) tilts toward the light, the top half gets more light — that's summer!
4. When the North Pole tilts away, the top half gets less light — that's winter!
5. Now hold the globe so neither pole tilts toward or away from the light — that's the equinox! Both halves get equal light

2. Shadow Tracking

On or near the equinox, go outside and track shadows:

• Place a stick or pencil upright in the ground in a sunny spot
• Mark the tip of the shadow every hour with a small stone or chalk mark
• Notice how the shadow is shortest at noon (when the Sun is highest)
• Compare with shadows at other times of year — during the equinox, the shadow path makes a straight line!

3. Nature Walk

Spring is arriving! Take a walk and look for signs of the new season:

• New buds on trees
• Early spring flowers (crocuses, daffodils, tulips)
• Birds returning or singing more
• Longer daylight hours

Have your child draw or photograph what they find. This makes a wonderful spring nature journal!

4. Equinox Art

Use the printout to explore the concept visually:

• Color the daytime side of the Earth yellow and the nighttime side dark blue
• Draw the Sun on one side
• Label the equator, the North and South Poles
• Draw spring scenes on one side and autumn scenes on the other (for the two hemispheres!)

Fun Facts

• The equinox happens twice a year — in March (spring) and September (autumn)
• Ancient people built structures to mark the equinox, like Stonehenge in England and the Mayan pyramids in Mexico
• On the equinox, if you stood on the equator, the Sun would pass directly overhead at noon
• Many cultures celebrate the equinox as a time of balance and new beginnings

What This Develops

• Scientific thinking — understanding cause and effect (Earth's tilt causes seasons)
• Observation skills — tracking shadows and signs of spring
• Vocabulary — equinox, hemisphere, axis, orbit, solstice
• Connection to nature — noticing and appreciating seasonal changes

The Spring Equinox is a perfect time to connect your child with the natural world and the amazing science of our planet!