1 Yardstick Eclipse Activity (set of 5)

Why do solar or lunar eclipses happen? Our most sought after activity is created by the ASP and available in a grab-and-go portable version for use in both formal and informal settings to help us answer this common question and more. Packaged in two sizes: set of 5 or set of 100. Perfect for group settings.

Prepare your students and communities for the upcoming 2023 and 2024 Solar Eclipses!

Bulk order lead time 4 weeks. Please contact us for all bulk orders above 20 Kits (100 individual activities) for pricing options and lead time. service@astrosociety.org

Images and Activity Downloads:

Two women demonstrating the yardstick eclipse activity

yardstick activity

yardstick activity

yardstick activity outside

We’ve found the perfect materials for students and participants to explore solar and lunar eclipses kinesthetically. This activity also comes with an easy-to-use facilitation card that prompts the facilitator with active questioning examples to encourage learning through discovery by children and adults alike.

Educators can use this activity to model eclipses outside on a sunny day or in a room with one bright light. Depending on the level of investigation, this activity can take between 10–45 minutes. Ages 7 and up.

1 Kit = 5 Activities

Set of 20 Kits = 100 Activities (Shipping is included)

Download the activity instructions to help you use this kit and answer "Why do Eclipses Happen?"

View the Yardstick Eclipse video.

This activity is also adapted with an approach to developing, enlarging, and refining students’ initial ideas about lunar and solar eclipses and demystifying the process in the October 2016 issue of NSTA Science Scope. Order a pdf file of the article Exploring Lunar and Solar Eclipses via a 3-D Modeling Design Task online.