The Astronomy Center has provided educational resources to introductory astronomy educators since 2003. Over the past 20 years, the rapid pace of discovery has rendered some of our linked resources obsolete. Thus, the Astronomy Center will be decommissioned on March 1, 2022. Our highest quality resources will be retained on ComPADRE.org.
The EJS Lunar Month JS model displays the appearance of the Moon over the course of the lunar (synodic) month. The window shows the appearance of the Moon as seen from Earth as well as the current number of days into the lunar month and the current Moon phase.
K-2: 4A/P2. The sun can be seen only in the daytime, but the moon can be seen sometimes at night and sometimes during the day. The sun, moon, and stars all appear to move slowly across the sky.
K-2: 4A/P3. The moon looks a little different every day but looks the same again about every four weeks.
4B. The Earth
6-8: 4B/M5. The moon's orbit around the earth once in about 28 days changes what part of the moon is lighted by the sun and how much of that part can be seen from the earth- the phases of the moon.
11. Common Themes
6-8: 11B/M1. Models are often used to think about processes that happen too slowly, too quickly, or on too small a scale to observe directly. They are also used for processes that are too vast, too complex, or too dangerous to study.
NSES Content Standards
Con.D: Earth & Space Science
K-4: Objects in the Sky
K-4: Changes in Earth & Sky
NSES Professional Development Standards
PD.A: Learn Science Content through Inquiry
Active Investigation: Involve teachers in actively investigating phenomena that can be studied scientifically, interpreting results, and making sense of findings consistent with currently accepted scientific understanding.
Timberlake, T., & Belloni, M. (2015). Lunar Month JS Model (Version 1.0) [Computer software]. Retrieved December 9, 2022, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13417&DocID=4003
%0 Computer Program %A Timberlake, Todd %A Belloni, Mario %D March 4, 2015 %T Lunar Month JS Model %7 1.0 %8 March 4, 2015 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13417&DocID=4003
Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.